fix: Remove objc from session replay recording methods

[noahsmartin]

Fixes #6198 by removing the objc selectors in favor of pure Swift

Closes #6212

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.705%. Comparing base (a4c5ddc) to head (5a7fffc).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #6211   +/-   ##
=========================================
  Coverage   86.705%   86.705%           
=========================================
  Files          436       435    -1     
  Lines        37090     37090           
  Branches     17363     17366    +3     
=========================================
  Hits         32159     32159           
+ Misses        4889      4888    -1     
- Partials        42        43    +1     

Files with missing lines	Coverage Δ
...grations/SessionReplay/SentryReplayRecording.swift	100.000% <100.000%> (ø)

... and 1 file with indirect coverage changes

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[philprime]

LGTM, thank you.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1221.96 ms	1249.96 ms	28.00 ms
Size	23.75 KiB	976.63 KiB	952.88 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
162cd7f	1230.59 ms	1256.76 ms	26.16 ms
30f4e4c	1213.21 ms	1250.29 ms	37.08 ms
65f8d2e	1221.15 ms	1243.96 ms	22.81 ms
331dad6	1210.40 ms	1242.06 ms	31.67 ms
bc0a04c	1226.83 ms	1255.04 ms	28.21 ms
480185d	1220.50 ms	1246.04 ms	25.54 ms
2a07609	1207.79 ms	1233.77 ms	25.98 ms
e98d6f5	1228.51 ms	1258.85 ms	30.34 ms
83bb978	1238.33 ms	1260.04 ms	21.71 ms
3ec47ae	1229.71 ms	1257.13 ms	27.41 ms

App size

Revision	Plain	With Sentry	Diff
162cd7f	23.75 KiB	908.39 KiB	884.64 KiB
30f4e4c	23.75 KiB	879.24 KiB	855.50 KiB
65f8d2e	23.74 KiB	872.67 KiB	848.93 KiB
331dad6	23.75 KiB	928.12 KiB	904.37 KiB
bc0a04c	23.75 KiB	933.32 KiB	909.57 KiB
480185d	23.75 KiB	913.42 KiB	889.67 KiB
2a07609	23.75 KiB	912.78 KiB	889.03 KiB
e98d6f5	23.75 KiB	933.03 KiB	909.28 KiB
83bb978	23.75 KiB	920.64 KiB	896.89 KiB
3ec47ae	23.75 KiB	919.91 KiB	896.16 KiB