Support 16kb page size for Android 15 (8.x.x)

[markushi]

📜 Description

Counterpart to 7.x.x PR #3620
Also increases the minSdk version to 21.

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code.
• 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.
• 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]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 486c1e0

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	444.73 ms	505.47 ms	60.74 ms
Size	1.70 MiB	2.30 MiB	617.43 KiB