…6392)

Several file-settings ITs fail (rarely) with exceptions like:

```
java.nio.file.AccessDeniedException: C:\Users\jenkins\workspace\platform-support\14\server\build\testrun\internalClusterTest\temp\org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT_5733F2A737542BE-001\tempFile-001.tmp -> C:\Users\jenkins\workspace\platform-support\14\server\build\testrun\internalClusterTest\temp\org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT_5733F2A737542BE-001\tempDir-002\config\operator\settings.json |  

at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:89) |  
-- | --
  |   | at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) |  
  |   | at sun.nio.fs.WindowsFileCopy.move(WindowsFileCopy.java:317) |  
  |   | at sun.nio.fs.WindowsFileSystemProvider.move(WindowsFileSystemProvider.java:293) |  
  |   | at org.apache.lucene.tests.mockfile.FilterFileSystemProvider.move(FilterFileSystemProvider.java:144) |  
  |   | at org.apache.lucene.tests.mockfile.FilterFileSystemProvider.move(FilterFileSystemProvider.java:144) |  
  |   | at org.apache.lucene.tests.mockfile.FilterFileSystemProvider.move(FilterFileSystemProvider.java:144) |  
  |   | at org.apache.lucene.tests.mockfile.FilterFileSystemProvider.move(FilterFileSystemProvider.java:144) |  
  |   | at java.nio.file.Files.move(Files.java:1430) |  
  |   | at org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT.writeJSONFile(SnaphotsAndFileSettingsIT.java:86) |  
  |   | at org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT.testRestoreWithPersistedFileSettings(SnaphotsAndFileSettingsIT.java:321)
```

This happens in Windows file systems, due to a race condition where the
file settings service is reading the settings file concurrently with the
test trying to modify it (a no-go in Windows). It turns out we have
already addressed this with a retry for one test suite
(elastic#91863), plus addressed a
related issue around mock windows file-systems misbehaving
(elastic#92653).

This PR extends the above fixes to all file-settings related ITs.

(cherry picked from commit 91559da)