Fix Maven 4 @Mojo descriptor attributes

[efegokdemir]

Fixes #1231.

What

• Accept the Maven 4 onlineRequired, dependencyCollection, and dependencyResolutionPathScopes annotation attributes during descriptor extraction.
• Write path scopes to dependencyCollection when collection is requested, and to dependencyResolution otherwise.
• Add Maven 4 integration coverage for each attribute.

Why

The annotation scanner dispatches attributes to same-named setters on MojoAnnotationContent. The missing setters made the descriptor goal fail when Maven 4 annotation attributes were explicitly set. The path scopes also need to be retained in the matching Maven 4 descriptor field.

Testing

• Before the fix, the v4api-4x integration fixture failed during descriptor generation with Method: 'dependencyResolutionPathScopes' not found.
• After the fix, JAVA_HOME=/opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk/Contents/Home /tmp/maven4-rc7/apache-maven-4.0.0-rc-7/bin/mvn -pl maven-plugin-plugin -am -Prun-its -Dinvoker.test=v4api-4x -DskipTests verify — PASS; the Maven 4 v4api-4x integration test passed.
• JAVA_HOME=/opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk/Contents/Home /opt/homebrew/Cellar/maven/3.10.0/libexec/bin/mvn -pl maven-plugin-tools-annotations -am test — PASS; 98 tests, no failures or errors.
• git diff --cached --check — PASS.

Notes

AI assistance was used during preparation; the submitting contributor reviewed the changes and test results.

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• I hereby declare this contribution to be licensed under the Apache License Version 2.0 (January 2004).
• I hereby declare that I have filed an Apache Individual Contributor License Agreement.