Random RenamePackageTests failure in I-build

I20240822-0100
org.eclipse.jdt.ui.tests.refactoring.RenamePackageTests
testImportFromMultiRoots5

The above test failed on gtk3-java17.

```
invalid update in file ATest.java [in q [in srcTest [in RenamePack2]]] package q class ATest A t A t2 expected: but was:

org.junit.ComparisonFailure: invalid update in file ATest.java [in q [in srcTest [in RenamePack2]]]
package q
class ATest
A t
A t2 expected: but was:
at org.junit.Assert.assertEquals(Assert.java:117)
at org.eclipse.jdt.ui.tests.refactoring.GenericRefactoringTest.assertEqualLines(GenericRefactoringTest.java:648)
at org.eclipse.jdt.ui.tests.refactoring.RenamePackageTests.helperMultiProjects(RenamePackageTests.java:488)
at org.eclipse.jdt.ui.tests.refactoring.RenamePackageTests.testImportFromMultiRoots5(RenamePackageTests.java:1387)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
```

Start with RenamePackageTests.testImportFromMultiRoots5 and its helperMultiProjects call, then inspect GenericRefactoringTest.assertEqualLines around the reported failure. Run the test on gtk3-java17 and compare the expected and actual ATest.java updates. Done means the intermittent failure is understood and the test passes consistently with the expected import update.

Written by the indexing model from the issue text.