Move task operations out of onVariants to fix AGP Artifacts API confl…

[RyanCommits]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

Fixes issue where calling tasks.matching{}.each{} inside androidComponents.onVariants()
forces task realization during AGP's variant configuration phase, disrupting the
Artifacts API transform chain used by other plugins (e.g. Fullstory).

This caused APK transforms from other plugins to output to build/intermediates/
instead of build/outputs/, breaking downstream tooling that expects APKs in the
standard location.

The fix:

• Collect only variant metadata (name, outputs) in onVariants callback
• Move all task-level operations (tasks.matching, tasks.register, etc.) into
  project.afterEvaluate within the plugins.withId block
• Update extractCurrentVariants to accept pre-collected data instead of live variant

This ensures the AGP Artifacts API transform chain is fully established before
Sentry accesses any tasks, preventing interference with other plugins.

💡 Motivation and Context

This is currently conflicting with the Fullstory plugin

💚 How did you test it?

📝 Checklist

• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled
• I updated the docs if needed.
• I updated the wizard if needed.
• All tests passing
• No breaking changes

🔮 Next steps

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

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• Move task operations out of onVariants to fix AGP Artifacts API confl… by RyanCommits in #5690

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