fix: profiling memory growth fix

[armcknight]

Following on from #3133, write a test that exercises the situation that is causing the memory growth bug. We actually already had a test that sets up the scenario, but prior to being able to mock backtraces, which that linked PR provides the ability to do, we were not able to distinguish which profile data comes from which profiler–and therefore tell that one had been lost. Now that we can disambiguate them with different mock data, we can ensure both are preserved. This test should fail in this PR and then pass in #3135 with the fixes.

#skip-changelog

[philipphofmann]

LGTM, but the tests are failing.

[armcknight]

The test is supposed to fail in this PR. We'll merge #3135 which is the fix into this branch before merging this to main.

[codecov]

Codecov Report

Merging #3145 (f24e9a7) into main (591a01b) will increase coverage by 0.020%.
The diff coverage is 91.787%.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #3145       +/-   ##
=============================================
+ Coverage   89.108%   89.129%   +0.020%     
=============================================
  Files          501       501               
  Lines        53867     53951       +84     
  Branches     19298     19327       +29     
=============================================
+ Hits         48000     48086       +86     
+ Misses        5011      4898      -113     
- Partials       856       967      +111     

Impacted Files	Coverage Δ
Sources/Sentry/SentryNSNotificationCenterWrapper.m	85.714% <ø> (ø)
Sources/Sentry/SentryProfiler.mm	79.672% <81.818%> (+1.585%)	⬆️
Sources/Sentry/SentryTracerConcurrency.mm	95.081% <94.000%> (-4.919%)	⬇️
Sources/Sentry/SentryFramesTracker.m	98.449% <100.000%> (ø)
Sources/Sentry/SentryScreenFrames.m	67.857% <100.000%> (+12.857%)	⬆️
Sources/Sentry/SentryTracer.m	96.254% <100.000%> (-0.388%)	⬇️
...SentryProfilerTests/SentryProfilerSwiftTests.swift	97.231% <100.000%> (+0.167%)	⬆️
Tests/SentryProfilerTests/SentryProfilerTests.mm	98.333% <100.000%> (+0.098%)	⬆️
...ance/FramesTracking/SentryFramesTrackerTests.swift	98.742% <100.000%> (-0.016%)	⬇️
...ts/SentryTests/Transaction/SentryTracerObjCTests.m	100.000% <100.000%> (ø)

... and 24 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1226.58 ms	1242.22 ms	15.64 ms
Size	22.84 KiB	402.08 KiB	379.24 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
43aa39d	1239.16 ms	1270.42 ms	31.26 ms
7bc3c0d	1259.74 ms	1268.45 ms	8.71 ms
6f4d20c	1228.67 ms	1238.88 ms	10.21 ms
984eb2d	1220.62 ms	1235.24 ms	14.62 ms
03d9eb5	1227.35 ms	1231.24 ms	3.90 ms
596ccc1	1221.57 ms	1236.82 ms	15.25 ms
1d11695	1219.57 ms	1243.52 ms	23.95 ms
6e342ac	1202.98 ms	1228.74 ms	25.76 ms
1bbcb9c	1189.61 ms	1223.50 ms	33.89 ms
06548c0	1225.58 ms	1244.70 ms	19.12 ms

App size

Revision	Plain	With Sentry	Diff
43aa39d	20.76 KiB	432.82 KiB	412.06 KiB
7bc3c0d	20.76 KiB	427.35 KiB	406.59 KiB
6f4d20c	20.76 KiB	431.71 KiB	410.95 KiB
984eb2d	20.76 KiB	425.77 KiB	405.01 KiB
03d9eb5	20.76 KiB	436.33 KiB	415.57 KiB
596ccc1	22.84 KiB	401.44 KiB	378.60 KiB
1d11695	20.76 KiB	401.60 KiB	380.84 KiB
6e342ac	20.76 KiB	436.66 KiB	415.90 KiB
1bbcb9c	20.76 KiB	426.10 KiB	405.34 KiB
06548c0	20.76 KiB	427.35 KiB	406.59 KiB