iOS copy native replay screenshot in-memory to native

[vaind]

📜 Description

Sending binary data (uint8list) over method channels is rather slow so instead, we allocate the memory directly in dart and only send the address and length & restore the object in objective-c.

Following screenshots show profiling flamechart (combined data) over 20-ish seconds before and after this PR. I've highlighted the relevant part

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1253.47 ms	1270.53 ms	17.06 ms
Size	8.42 MiB	9.86 MiB	1.44 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
be173fa	1364.84 ms	1424.49 ms	59.65 ms
24f71aa	1267.47 ms	1272.00 ms	4.53 ms
7224aae	1246.78 ms	1268.35 ms	21.58 ms
9f9dd52	1364.63 ms	1394.89 ms	30.25 ms
abcdba3	1257.31 ms	1283.49 ms	26.18 ms
77db8d4	1228.47 ms	1248.80 ms	20.33 ms
905bf99	1240.84 ms	1271.47 ms	30.63 ms
cf91c9d	1217.08 ms	1233.00 ms	15.92 ms
1c6eb5b	1277.85 ms	1285.71 ms	7.86 ms
13f8952	1249.98 ms	1278.31 ms	28.33 ms

App size

Revision	Plain	With Sentry	Diff
be173fa	8.33 MiB	9.54 MiB	1.22 MiB
24f71aa	8.10 MiB	9.16 MiB	1.07 MiB
7224aae	8.42 MiB	9.83 MiB	1.40 MiB
9f9dd52	8.33 MiB	9.63 MiB	1.29 MiB
abcdba3	8.15 MiB	9.12 MiB	989.76 KiB
77db8d4	8.38 MiB	9.73 MiB	1.35 MiB
905bf99	8.38 MiB	9.74 MiB	1.36 MiB
cf91c9d	8.33 MiB	9.40 MiB	1.07 MiB
1c6eb5b	8.15 MiB	9.12 MiB	986.27 KiB
13f8952	8.38 MiB	9.78 MiB	1.40 MiB

Previous results on branch: enha/replay-copy-image-in-memory

Startup times

Revision	Plain	With Sentry	Diff
3c54d06	1262.06 ms	1272.44 ms	10.38 ms
cd51c10	1241.50 ms	1266.69 ms	25.19 ms

App size

Revision	Plain	With Sentry	Diff
3c54d06	8.42 MiB	9.86 MiB	1.44 MiB
cd51c10	8.42 MiB	9.86 MiB	1.44 MiB

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	468.43 ms	511.92 ms	43.49 ms
Size	6.46 MiB	7.48 MiB	1.01 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
a510d1d	295.63 ms	344.65 ms	49.03 ms
8fa3934	340.64 ms	407.92 ms	67.28 ms
1d47eb7	282.26 ms	342.52 ms	60.26 ms
68677de	364.41 ms	415.61 ms	51.20 ms
0a23f98	377.19 ms	416.18 ms	39.00 ms
3de8b9b	348.55 ms	445.84 ms	97.29 ms
bd75526	515.20 ms	568.79 ms	53.59 ms
c1bb00f	303.77 ms	371.88 ms	68.11 ms
211a7aa	324.19 ms	393.26 ms	69.07 ms
04211b9	502.46 ms	542.29 ms	39.83 ms

App size

Revision	Plain	With Sentry	Diff
a510d1d	5.94 MiB	6.96 MiB	1.02 MiB
8fa3934	6.06 MiB	7.09 MiB	1.03 MiB
1d47eb7	6.16 MiB	7.14 MiB	1010.29 KiB
68677de	6.06 MiB	7.10 MiB	1.04 MiB
0a23f98	6.06 MiB	7.03 MiB	996.97 KiB
3de8b9b	6.27 MiB	7.20 MiB	957.75 KiB
bd75526	6.49 MiB	7.56 MiB	1.07 MiB
c1bb00f	6.06 MiB	7.09 MiB	1.03 MiB
211a7aa	6.06 MiB	7.03 MiB	997.24 KiB
04211b9	6.49 MiB	7.57 MiB	1.08 MiB

Previous results on branch: enha/replay-copy-image-in-memory

Startup times

Revision	Plain	With Sentry	Diff
cd51c10	438.06 ms	497.23 ms	59.17 ms
3c54d06	435.34 ms	501.85 ms	66.51 ms

App size

Revision	Plain	With Sentry	Diff
cd51c10	6.46 MiB	7.48 MiB	1.01 MiB
3c54d06	6.46 MiB	7.48 MiB	1.01 MiB

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.99%. Comparing base (8eacc40) to head (6543a63).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2530      +/-   ##
==========================================
+ Coverage   86.97%   91.99%   +5.02%     
==========================================
  Files         265       89     -176     
  Lines        9413     3087    -6326     
==========================================
- Hits         8187     2840    -5347     
+ Misses       1226      247     -979     

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