6 failures in org.eclipse.ui.genericeditor.tests on Java 25

[stephan-herrmann]

Are you guys aware that org.eclipse.ui.genericeditor.tests has problems on Java 25?
We constantly see 6 failures during Y-builds, e.g.:
https://download.eclipse.org/eclipse/downloads/drops4/Y20250809-1000/testresults/html/org.eclipse.ui.genericeditor.tests_ep437Y-unit-linux-x86_64-java25_linux.gtk.x86_64_25.html

None of these are observed on Java 21, see the overview at https://download.eclipse.org/eclipse/downloads/drops4/Y20250809-1000/testResults.php

[akurtakov]

Now that I-builds run Java 25 tests these can be seen at https://download.eclipse.org/eclipse/downloads/drops4/I20250813-1800/testresults/html/org.eclipse.ui.genericeditor.tests_ep437I-unit-linux-x86_64-java25_linux.gtk.x86_64_25.html .
Tests are quite obscure thus #3175 , #3178 and #3174 are applied. Hopefully making it a bit easier to spot the problem.

[iloveeclipse]

No fails on master anymore, no idea why.