platform/core.windows + platform/favorites tests fail too often

[mbien]

this started happening not too long ago and requires too many restarts atm, e.g:
https://github.com/apache/netbeans/actions/runs/4992043385
https://github.com/apache/netbeans/actions/runs/4962612141
both passed after 8 runs of Platform Modules batch1.

  [junit] java.lang.AssertionError: Should have found a nonproblematic provider of needs org.openide.modules.jre.JavaFX among
StandardModule:org.netbeans.libs.javafx.linux jarFile: /home/runner/work/netbeans/netbeans/nbbuild/netbeans/extra/modules/org-netbeans-libs-javafx-linux.jar, 
... long list of jars
  [junit] 	at org.netbeans.ModuleManager.maybeAddToEnableList(ModuleManager.java:1858)
  [junit] 	at org.netbeans.ModuleManager.maybeAddToEnableList(ModuleManager.java:1815)
  [junit] 	at org.netbeans.ModuleManager.simulateEnable(ModuleManager.java:1703)
  [junit] 	at org.netbeans.ModuleManager.simulateEnable(ModuleManager.java:1675)
  [junit] 	at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:290)
  [junit] 	at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:252)
  [junit] 	at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:298)
  [junit] 	at org.netbeans.core.startup.Main.getModuleSystem(Main.java:173)
  [junit] 	at org.netbeans.core.startup.Main.getModuleSystem(Main.java:142)
  [junit] 	at org.netbeans.core.startup.Main.start(Main.java:303)
  [junit] 	at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:98)
  [junit] 	at java.lang.Thread.run(Thread.java:750)
  [junit] Testsuite: org.netbeans.core.windows.awt.ValidateLayerToolbarTest

It isn't always the same test, but usually one of the following:

org.netbeans.core.windows.awt.ValidateLayerMenuTest:BeforeFirstTest
org.netbeans.core.windows.awt.ValidateLayerToolbarTest:BeforeFirstTest
org.netbeans.modules.favorites.AddToFavoritesTest:BeforeFirstTest

which fail during setup, outside of the actual test cases