[PR] [Backport maven-4.0.x] Fix #12931: do not rewrite unmodified POMs in mvnup apply [maven]

["gnodet (via GitHub)" <gi...@apache.org>]

gnodet opened a new pull request, #12972:
URL: https://github.com/apache/maven/pull/12972

   Backport of #12938 to `maven-4.0.x`.
   
   ## Summary
   
   `mvnup apply` always logged `Saving modified POMs...` and wrote every discovered POM, even when every strategy reported `0 POM(s) modified`. That both misleads the user and rewrites files that did not change.
   
   `UpgradeResult` already tracks `modifiedPoms`. Apply now:
   
   - writes only those POMs
   - skips the save report entirely when the set is empty
   
   Fixes #12931


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Re: [PR] [Backport maven-4.0.x] Fix #12931: do not rewrite unmodified POMs in mvnup apply [maven]

["gnodet (via GitHub)" <gi...@apache.org>]

gnodet merged PR #12972:
URL: https://github.com/apache/maven/pull/12972


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