fix(breadcrumbs): Unregister SystemEventsBroadcastReceiver when entering background

[romtsn]

📜 Description

Some background

Android 14 introduced new behavior for broadcast receivers, and our SystemEvents receiver (used to add breadcrumbs like screen on/off, airplane mode change, etc.) is falling under this. What's happening is the process gets cached for some period of time (can be hours or days) and after getting uncached it receives all those pending broadcasts in a quick succession which most likely causes ANRs. This also correlates with the numbers we see in SDKCD where the biggest number of ANRs is coming from Android 14+.

I did some tests locally and it is indeed happening as described on the screenshot.

---

• SystemEventsBreadcrumbsIntegration is now lifecycle-aware:
  • When an app enters background we unregister the receiver
  • When it enters foreground back, we enqueue a task to register the receiver again
  • This way we avoid being registered in the OS for all those broadcasts and do not receive all the pending ones after the app gets uncached

💡 Motivation and Context

Closes #4294
Internal customer case

💚 How did you test it?

Manually + automated

📝 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

[romtsn]

Unrelated to this PR, but I just noticed while testing no androidx.lifecycle case that it's noisy and decided to change that

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	407.86 ms	446.78 ms	38.92 ms
Size	1.58 MiB	2.08 MiB	506.55 KiB

Previous results on branch: rz/fix/system-events-receiver-anrs

Startup times

Revision	Plain	With Sentry	Diff
70f2879	392.29 ms	428.98 ms	36.69 ms
1c3deaf	398.74 ms	423.76 ms	25.02 ms

App size

Revision	Plain	With Sentry	Diff
70f2879	1.58 MiB	2.08 MiB	506.59 KiB
1c3deaf	1.58 MiB	2.08 MiB	506.58 KiB

[markushi]

Awesome, I left two small comments!