**Build scan:**
https://gradle-enterprise.elastic.co/s/zq2kphzkmzhew/tests/:x-pack:plugin:vector-tile:javaRestTest/org.elasticsearch.xpack.vectortile.VectorTileRestIT/testCentroidGridTypeOnPolygon
**Reproduction line:**
```
./gradlew ':x-pack:plugin:vector-tile:javaRestTest' --tests "org.elasticsearch.xpack.vectortile.VectorTileRestIT.testCentroidGridTypeOnPolygon" -Dtests.seed=14BAD40932D7145 -Dtests.locale=sr-Latn-RS -Dtests.timezone=Australia/Lord_Howe -Druntime.java=21
```

**Applicable branches:**
main

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.vectortile.VectorTileRestIT&tests.test=testCentroidGridTypeOnPolygon
**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: <POINT>
     but: was <UNKNOWN>

  at __randomizedtesting.SeedInfo.seed([14BAD40932D7145:11E1D2E97511F0E8]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.junit.Assert.assertThat(Assert.java:923)
  at org.elasticsearch.xpack.vectortile.VectorTileRestIT.assertFeatureType(VectorTileRestIT.java:972)
  at org.elasticsearch.xpack.vectortile.VectorTileRestIT.testCentroidGridTypeOnPolygon(VectorTileRestIT.java:589)
  at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
  at java.lang.reflect.Method.invoke(Method.java:580)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:48)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:1583)

```
server/src/test/java/org/elasticsearch/search/aggregations/bucket/geogrid/GeoTileUtilsTests.java
/**
     * Make sure that hash produces the expected key, and that the key could be converted to hash via a GeoPoint
     */
    private void assertStrCodec(long hash, String key, int zoom) {
        assertEquals(key, stringEncode(hash));
        final GeoPoint gp = keyToGeoPoint(key);
        assertEquals(hash, longEncode(gp.lon(), gp.lat(), zoom));
    }
    /**
     * A few hardcoded lat/lng/zoom hashing expectations
     */
    public void testStringEncode() {
        assertStrCodec(0x0000000000000000L, "0/0/0", 0);
        assertStrCodec(0x3C00095540001CA5L, "15/19114/7333", 15);
        assertStrCodec(0x77FFFF4580000000L, "29/536869420/0", 29);
        assertStrCodec(0x740000BA7FFFFFFFL, "29/1491/536870911", 29);
        assertStrCodec(0x0800000040000001L, "2/2/1", 2);
        assertStrCodec(0x0C00000060000000L, "3/3/0", 3);
        assertStrCodec(0x71127D27C8ACA67AL, "28/143911230/145532538", 28);
        assertStrCodec(0x4C0077776003A9ACL, "19/244667/240044", 19);
        assertStrCodec(0x140000024000000EL, "5/18/14", 5);
        assertStrCodec(0x6436F96B60000000L, "25/28822363/0", 25);
        assertStrCodec(0x6411BD6BA0A98359L, "25/9300829/11109209", 25);
        assertStrCodec(0x751BD6BBCA983596L, "29/148813278/177747350", 29);
        assertStrCodec(0x77CF880A20000000L, "29/511459409/0", 29);
        assertStrCodec(0x7624FA4FA0000000L, "29/287822461/0", 29);
        assertStrCodec(0x7624FA4FBFFFFFFFL, "29/287822461/536870911", 29);
        assertStrCodec(0x0400000020000000L, "1/1/0", 1);
        assertStrCodec(0x0400000020000001L, "1/1/1", 1);
        expectThrows(IllegalArgumentException.class, () -> stringEncode(-1L));