Introduced by #95886. We've got a turkish I here causing string equality mismatch

**Build scan:**
https://gradle-enterprise.elastic.co/s/iik5gi62i5sdq/tests/:x-pack:plugin:security:test/org.elasticsearch.xpack.security.transport.netty4.SecurityNetty4HttpServerTransportTests/testMalformedRequestDispatchedNoAuthn

**Reproduction line:**
```
./gradlew ':x-pack:plugin:security:test' --tests "org.elasticsearch.xpack.security.transport.netty4.SecurityNetty4HttpServerTransportTests.testMalformedRequestDispatchedNoAuthn" -Dtests.seed=A4B64B6F13AB9626 -Dtests.locale=tr -Dtests.timezone=US/Indiana-Starke -Druntime.java=20
```

**Applicable branches:**
main

**Reproduces locally?:**
Yes

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.security.transport.netty4.SecurityNetty4HttpServerTransportTests&tests.test=testMalformedRequestDispatchedNoAuthn

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: a string containing "NOT A VALID HTTP LINE"
     but: was "java.lang.IllegalArgumentException: invalid version format: NOT A VALİD HTTP LİNE"

  at __randomizedtesting.SeedInfo.seed([A4B64B6F13AB9626:D95AF3108B934C8B]: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.security.transport.netty4.SecurityNetty4HttpServerTransportTests.testMalformedRequestDispatchedNoAuthn(SecurityNetty4HttpServerTransportTests.java:584)
  at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
  at java.lang.reflect.Method.invoke(Method.java:578)
  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:1623)

```
test/framework/src/main/java/org/elasticsearch/test/ESTestCase.java
String message = event.getMessage().getFormattedMessage();
                    if (Level.ERROR.equals(event.getLevel()) && message.contains("LEAK:")) {
                        synchronized (loggedLeaks) {
                            loggedLeaks.add(message);
                        }
                    }
                }
            };
            leakAppender.start();
            Loggers.addAppender(leakLogger, leakAppender);
            
            Runtime.getRuntime().addShutdownHook(new Thread(() -> {
                leakAppender.stop();
                LoggerContext context = (LoggerContext) LogManager.getContext(false);
                Configurator.shutdown(context);
            }));
        }
        BootstrapForTesting.ensureInitialized();
        /*
         * We need to exclude time zones not supported by joda (like SystemV* timezones)
         * because they cannot be converted back to DateTimeZone which we currently
         * still need to do internally e.g. in bwc serialization and in the extract() method
         * //TODO remove once tests do not send time zone ids back to versions of ES using Joda
         */
        Set<String> unsupportedJodaTZIds = Set.of(
            "ACT",
            "AET",
            "AGT",
            "ART",
            "AST",