fix(replay): Prevent concurrent PixelCopy frame access

[romtsn]

📜 Description

Prevent concurrent access to the bitmap shared by PixelCopy and replay processing.

The strategy now drops a capture while another frame is in flight, keeps the gate held through
masking and SurfaceView compositing, suppresses last-frame emission during that work, and defers
bitmap cleanup until the outstanding PixelCopy callback completes.

💡 Motivation and Context

PixelCopy.request() returns before RenderThread finishes writing its destination. The replay
executor could therefore draw masks or SurfaceView content into the same bitmap, while close()
could recycle it before the asynchronous request completed. This could produce torn or improperly
masked frames and may contribute to native libhwui crashes.

Dropping an overlapping frame avoids blocking the main thread or allocating a second recording
bitmap.

Fixes #5340
Refs JAVA-490

💚 How did you test it?

• ./gradlew ':sentry-android-replay:testDebugUnitTest' --tests='*PixelCopyStrategyTest*' --info
• ./gradlew spotlessApply apiDump

Added regression coverage for requests overlapping PixelCopy, queued masking, last-frame emission,
and cleanup during an outstanding request.

📝 Checklist

• I added GH Issue ID & Linear ID
• 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.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

• Harden capture submission around Window and SurfaceView lifecycle transitions separately.
• Consider restoring RGB_565 when SurfaceView capture is disabled in a separate change.

[linear-code]

JAVA-490

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

### Fixes

- Prevent concurrent PixelCopy frame access ([#5808](https://github.com/getsentry/sentry-java/pull/5808))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description or adding a skip-changelog label.

Generated by 🚫 dangerJS against 45c33ca

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.49.0 (1)	release

⚙️ sentry-android Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	313.33 ms	371.69 ms	58.35 ms
Size	0 B	0 B	0 B

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
5b1a06b	352.27 ms	413.70 ms	61.43 ms
2124a46	319.19 ms	415.04 ms	95.85 ms
ad8da22	314.52 ms	352.47 ms	37.95 ms
d15471f	304.55 ms	408.43 ms	103.87 ms
0ee65e9	317.37 ms	366.50 ms	49.13 ms
2195398	351.77 ms	433.22 ms	81.45 ms
ee747ae	358.21 ms	389.41 ms	31.20 ms
abfcc92	309.54 ms	380.32 ms	70.78 ms
8558cac	306.16 ms	355.24 ms	49.09 ms
d15471f	310.26 ms	377.04 ms	66.78 ms

App size

Revision	Plain	With Sentry	Diff
5b1a06b	0 B	0 B	0 B
2124a46	1.58 MiB	2.12 MiB	551.51 KiB
ad8da22	1.58 MiB	2.29 MiB	719.83 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
0ee65e9	0 B	0 B	0 B
2195398	0 B	0 B	0 B
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
abfcc92	1.58 MiB	2.13 MiB	557.31 KiB
8558cac	0 B	0 B	0 B
d15471f	1.58 MiB	2.13 MiB	559.54 KiB