Hook User Interaction integration into running Activity in case of deferred SDK init (7.x.x)

[markushi]

📜 Description

Backport of https://github.com/getsentry/sentry-java/pull/4337/files

💡 Motivation and Context

React Native support.

💚 How did you test it?

📝 Checklist

• I added tests to verify the 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.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	478.04 ms	511.02 ms	32.98 ms
Size	1.70 MiB	2.36 MiB	677.22 KiB

[stefanosiano]

looks good!