Just got a bunch of instances of this suite timing out all on Windows agents. Could be a coincidence but seems unlikely.

**Build scan:**
https://gradle-enterprise.elastic.co/s/rvfpi7upehqjk/tests/:x-pack:plugin:esql:test/org.elasticsearch.xpack.esql.expression.function.scalar.nulls.CoalesceTests
**Reproduction line:**
```
null
```

**Applicable branches:**
main

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

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.esql.expression.function.scalar.nulls.CoalesceTests&tests.test=classMethod
**Failure excerpt:**
```
java.lang.Exception: Suite timeout exceeded (>= 2400000 msec).

  at __randomizedtesting.SeedInfo.seed([546AEE28130887AC]:0)

```
x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/scalar/nulls/CoalesceTests.java
}
            if (v instanceof List<?> l && l.size() == 1) {
                v = l.get(0);
            }
            assertThat(toJavaObject(value, 0), equalTo(v));
            return;
        }
        assertThat(value.isNull(0), equalTo(true));
    }
    @Override
    protected Coalesce build(Source source, List<Expression> args) {
        return new Coalesce(Source.EMPTY, args.get(0), args.subList(1, args.size()));
    }
    public void testCoalesceIsLazy() {
        List<Expression> sub = new ArrayList<>(testCase.getDataAsFields());
        FieldAttribute evil = new FieldAttribute(Source.EMPTY, "evil", new EsField("evil", sub.get(0).dataType(), Map.of(), true));
        sub.add(evil);
        Coalesce exp = build(Source.EMPTY, sub);
        Layout.Builder builder = new Layout.Builder();
        buildLayout(builder, exp);
        Layout layout = builder.build();
        Function<Expression, EvalOperator.ExpressionEvaluator.Factory> map = child -> {
            if (child == evil) {
                return dvrCtx -> new EvalOperator.ExpressionEvaluator() {
                    @Override
                    public Block.Ref eval(Page page) {
                        throw new AssertionError("shouldn't be called");
                    }
                    @Override
                    public void close() {}