Fix SIGABRT when modifying scope user

[denrase]

📜 Description

Fix SIGABRT when modifying scope user

💡 Motivation and Context

Closes #4231

💚 How did you test it?

Unit test

📝 Checklist

You have to check all boxes before merging:

• 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.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1226.06 ms	1244.45 ms	18.39 ms
Size	21.58 KiB	706.66 KiB	685.08 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
e84bc3f	1201.49 ms	1232.82 ms	31.33 ms
e072ad1	1232.43 ms	1245.51 ms	13.08 ms
6c31077	1233.80 ms	1245.34 ms	11.54 ms
e1cd9e9	1190.64 ms	1221.90 ms	31.26 ms
25737cb	1235.02 ms	1250.06 ms	15.04 ms
c00eafe	1198.26 ms	1227.62 ms	29.36 ms
94e1968	1234.41 ms	1252.63 ms	18.22 ms
a7ca2d1	1237.42 ms	1248.98 ms	11.56 ms
cf724da	1226.61 ms	1235.70 ms	9.09 ms
881a955	1222.94 ms	1246.26 ms	23.32 ms

App size

Revision	Plain	With Sentry	Diff
e84bc3f	20.76 KiB	434.72 KiB	413.96 KiB
e072ad1	21.58 KiB	625.83 KiB	604.24 KiB
6c31077	22.84 KiB	401.65 KiB	378.81 KiB
e1cd9e9	22.85 KiB	412.95 KiB	390.10 KiB
25737cb	20.76 KiB	436.29 KiB	415.53 KiB
c00eafe	20.76 KiB	432.87 KiB	412.11 KiB
94e1968	21.58 KiB	614.74 KiB	593.15 KiB
a7ca2d1	21.58 KiB	614.92 KiB	593.34 KiB
cf724da	20.76 KiB	430.52 KiB	409.76 KiB
881a955	22.85 KiB	407.63 KiB	384.78 KiB

Previous results on branch: fix/sigabrt-modify-scope-user

Startup times

Revision	Plain	With Sentry	Diff
d582094	1226.80 ms	1235.85 ms	9.06 ms
fa19249	1218.38 ms	1245.06 ms	26.69 ms

App size

Revision	Plain	With Sentry	Diff
d582094	21.58 KiB	705.05 KiB	683.47 KiB
fa19249	21.58 KiB	705.53 KiB	683.95 KiB

[armcknight]

The fix looks good, but I think the test needs to be a little more strict.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.634%. Comparing base (279351b) to head (a390a7e).
Report is 6 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #4274       +/-   ##
=============================================
+ Coverage   91.580%   91.634%   +0.054%     
=============================================
  Files          616       617        +1     
  Lines        50096     50194       +98     
  Branches     18015     18107       +92     
=============================================
+ Hits         45878     45995      +117     
+ Misses        4125      4106       -19     
  Partials        93        93               

Files	Coverage Δ
Sources/Sentry/SentryScope.m	96.694% <100.000%> (+0.013%)	⬆️
Tests/SentryTests/SentryScopeSwiftTests.swift	98.953% <100.000%> (+0.017%)	⬆️

... and 21 files with indirect coverage changes

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[philipphofmann]

LGTM