fix: Incorrect nullability in some dependencies

[noahsmartin]

Some of the nullability annotations were being misused here, in Swift they will have to be correct so I just pulled it out into a separate PR

#skip-changelog

Closes #6449

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.972%. Comparing base (dad3d69) to head (f3d25fd).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #6448       +/-   ##
=============================================
+ Coverage   86.706%   86.972%   +0.266%     
=============================================
  Files          449       449               
  Lines        37636     37637        +1     
  Branches     17449     17459       +10     
=============================================
+ Hits         32633     32734      +101     
+ Misses        4958      4860       -98     
+ Partials        45        43        -2     

Files with missing lines	Coverage Δ
...ors/SentryWatchdogTerminationBreadcrumbProcessor.m	98.571% <ø> (ø)
Sources/Sentry/SentryDefaultAppStateManager.m	100.000% <ø> (ø)
Sources/Sentry/SentryDependencyContainer.m	90.254% <ø> (ø)
Sources/Sentry/SentryFileManagerHelper.m	90.715% <ø> (ø)
Sources/Swift/Helper/SentryFileManager.swift	95.815% <100.000%> (ø)
...SentryWatchdogTerminationAttributesProcessor.swift	100.000% <100.000%> (ø)

... and 11 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update dad3d69...f3d25fd. Read the comment docs.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1226.00 ms	1252.18 ms	26.18 ms
Size	23.75 KiB	1015.08 KiB	991.33 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
0e9c5ae	1226.10 ms	1254.14 ms	28.04 ms
fc05805	1220.63 ms	1252.16 ms	31.54 ms
d157d83	1228.02 ms	1252.47 ms	24.45 ms
1fecbb8	1242.78 ms	1265.40 ms	22.62 ms
d8b2303	1231.53 ms	1249.89 ms	18.35 ms
c6c1cb7	1235.71 ms	1263.80 ms	28.08 ms
3b373bb	1218.19 ms	1250.57 ms	32.38 ms
397b9c9	1230.23 ms	1249.29 ms	19.06 ms
b714cb9	1224.71 ms	1238.04 ms	13.33 ms
c30e401	1218.71 ms	1243.73 ms	25.02 ms

App size

Revision	Plain	With Sentry	Diff
0e9c5ae	23.75 KiB	969.29 KiB	945.54 KiB
fc05805	23.75 KiB	908.02 KiB	884.27 KiB
d157d83	23.75 KiB	928.85 KiB	905.10 KiB
1fecbb8	23.75 KiB	969.28 KiB	945.53 KiB
d8b2303	23.75 KiB	908.02 KiB	884.27 KiB
c6c1cb7	23.75 KiB	928.15 KiB	904.40 KiB
3b373bb	23.75 KiB	947.72 KiB	923.97 KiB
397b9c9	23.75 KiB	959.44 KiB	935.70 KiB
b714cb9	23.75 KiB	858.69 KiB	834.93 KiB
c30e401	23.74 KiB	971.70 KiB	947.96 KiB

Previous results on branch: fixDependencyNullability

Startup times

Revision	Plain	With Sentry	Diff
fbf30aa	1232.52 ms	1263.89 ms	31.37 ms

App size

Revision	Plain	With Sentry	Diff
fbf30aa	23.75 KiB	1015.06 KiB	991.31 KiB

[itaybre]

LGTM