[build][test] CompletionTests16_2.test002 fails with Assertion error

In https://download.eclipse.org/eclipse/downloads/drops4/I20241030-1630/testresults/html/org.eclipse.jdt.core.tests.model_ep434I-unit-macosx-x86_64-java17_macosx.cocoa.x86_64_17.html

```
----------- Expected ------------ Enum[TYPE_REF]{Enum, java.lang, Ljava.lang.Enum;, null, null, 44}\n enum[KEYWORD]{enum, null, null, enum, null, 49} ------------ but was ------------ enum[KEYWORD]{enum, null, null, enum, null, 49} ---------------------- ---------- expected:<[Enum[TYPE_REF]{Enum, java.lang, Ljava.lang.Enum;, null, null, 44}\n ]enum[KEYWORD]{enum, ...> but was:<[]enum[KEYWORD]{enum, ...>

junit.framework.ComparisonFailure:
----------- Expected ------------
Enum[TYPE_REF]{Enum, java.lang, Ljava.lang.Enum;, null, null, 44}\n
enum[KEYWORD]{enum, null, null, enum, null, 49}
------------ but was ------------
enum[KEYWORD]{enum, null, null, enum, null, 49}
---------------------- ----------
expected:<[Enum[TYPE_REF]{Enum, java.lang, Ljava.lang.Enum;, null, null, 44}\n
]enum[KEYWORD]{enum, ...> but was:<[]enum[KEYWORD]{enum, ...>
at org.eclipse.jdt.core.tests.junit.extension.TestCase.assertStringEquals(TestCase.java:265)
at org.eclipse.jdt.core.tests.junit.extension.TestCase.assertEquals(TestCase.java:240)
at org.eclipse.jdt.core.tests.junit.extension.TestCase.assertEquals(TestCase.java:237)
at org.eclipse.jdt.core.tests.model.AbstractJavaModelCompletionTests.assertResults(AbstractJavaModelCompletionTests.java:223)
at org.eclipse.jdt.core.tests.model.CompletionTests16_2.test002(CompletionTests16_2.java:77)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at junit.framework.TestCase.runTest(TestCase.java:177)
at org.eclipse.jdt.core.tests.junit.extension.TestCase.runTest(TestCase.java:970)
at junit.framework.TestCase.runBare(TestCase.java:142)
at junit.framework.TestResult$1.protect(TestResult.java:122)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at junit.framework.TestResult.run(TestResult.java:125)
at junit.framework.TestCase.run(TestCase.java:130)
at junit.framework.TestSuite.runTest(TestSuite.java:241)
at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.runTest(SuiteOfTestCases.java:114)
at junit.framework.TestSuite.run(TestSuite.java:236)
at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.superRun(SuiteOfTestCases.java:97)
at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite$1.protect(SuiteOfTestCases.java:85)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at org.eclipse.jdt.core.tests.model.SuiteOfTestCases$Suite.run(SuiteOfTestCases.java:94)
at junit.framework.TestSuite.runTest(TestSuite.java:241)
at junit.framework.TestSuite.run(TestSuite.java:236)
at junit.framework.TestSuite.runTest(TestSuite.java:241)
at junit.framework.TestSuite.run(TestSuite.java:236)
```