Various fixes to instrumentations running on the main thread

[romtsn]

📜 Description

Here are just some preventive measure that will make less code/instructions to run on the main thread:

• Safety check for the Window.Callback to not be a SentryWindowCallback already to prevent multiple callbacks running simultaneously
• Get rid of requireNonNull calls as they are redundant (we do instanceof checks later on anyway)
• Check if tracing is enabled before instrumenting File I/O streams, because otherwise they go into the void anyway
• Speed up ViewUtils.findTarget method by avoiding ViewGroup children traversal if the touch was not within the ViewGroup bounds

Before

After

💡 Motivation and Context

Internal customer discussions

💚 How did you test it?

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

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	398.04 ms	459.90 ms	61.85 ms
Size	1.65 MiB	2.31 MiB	677.52 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
00c8eeb	415.32 ms	428.08 ms	12.76 ms

App size

Revision	Plain	With Sentry	Diff
00c8eeb	1.70 MiB	2.36 MiB	671.98 KiB

Previous results on branch: rz/fix/user-interaction-tracing

Startup times

Revision	Plain	With Sentry	Diff
add3e5a	449.39 ms	481.34 ms	31.95 ms
4e86894	429.12 ms	479.11 ms	49.99 ms
95322cb	410.15 ms	489.38 ms	79.23 ms

App size

Revision	Plain	With Sentry	Diff
add3e5a	1.65 MiB	2.31 MiB	677.51 KiB
4e86894	1.65 MiB	2.31 MiB	677.48 KiB
95322cb	1.65 MiB	2.31 MiB	677.51 KiB

[stefanosiano]

should we add the same test in SentryFileOutputStreamTest?

[romtsn]

yeah I can add one!

[stefanosiano]

just small details, but nice

[romtsn]

Superseded by #4051