ref: move SentryExtraContextProvider singleton to SentryDependencyContainer

[armcknight]

Another singleton that was passed in a few inits, that should be just accessed via the dependency container.

#skip-changelog

[codecov]

Codecov Report

Merging #3244 (db033de) into main (4b1a58e) will increase coverage by 0.030%.
The diff coverage is 93.750%.

@@              Coverage Diff              @@
##              main     #3244       +/-   ##
=============================================
+ Coverage   89.177%   89.207%   +0.030%     
=============================================
  Files          502       502               
  Lines        54210     54250       +40     
  Branches     19462     19476       +14     
=============================================
+ Hits         48343     48395       +52     
+ Misses        5002      4994        -8     
+ Partials       865       861        -4     

Files Changed	Coverage
Sources/Sentry/PrivateSentrySDKOnly.mm	0.000%
Sources/Sentry/SentryExtraContextProvider.m	ø
Sources/Sentry/SentryClient.m	100.000%
Sources/Sentry/SentryDependencyContainer.m	100.000%
Tests/SentryTests/SentryClientTests.swift	100.000%

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1275.57 ms	1293.06 ms	17.49 ms
Size	22.85 KiB	406.95 KiB	384.10 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
89d72e7	1222.60 ms	1252.78 ms	30.18 ms
24b4df1	1240.98 ms	1253.98 ms	13.00 ms
7c5d161	1224.38 ms	1249.66 ms	25.28 ms
efb0147	1245.26 ms	1266.94 ms	21.68 ms
89b12eb	1236.02 ms	1246.63 ms	10.61 ms
4259afd	1222.12 ms	1249.74 ms	27.62 ms
fdfe96b	1227.90 ms	1242.56 ms	14.66 ms
98a8c16	1206.40 ms	1232.14 ms	25.74 ms
d760c3f	1228.58 ms	1246.22 ms	17.64 ms
7cd187e	1204.78 ms	1235.86 ms	31.08 ms

App size

Revision	Plain	With Sentry	Diff
89d72e7	20.76 KiB	431.87 KiB	411.11 KiB
24b4df1	20.76 KiB	425.77 KiB	405.01 KiB
7c5d161	20.76 KiB	414.44 KiB	393.68 KiB
efb0147	22.84 KiB	403.52 KiB	380.67 KiB
89b12eb	20.76 KiB	432.88 KiB	412.11 KiB
4259afd	20.76 KiB	419.70 KiB	398.94 KiB
fdfe96b	20.76 KiB	419.70 KiB	398.95 KiB
98a8c16	20.76 KiB	431.00 KiB	410.24 KiB
d760c3f	22.84 KiB	403.17 KiB	380.33 KiB
7cd187e	20.76 KiB	401.65 KiB	380.89 KiB

Previous results on branch: armcknight/ref/centralize-SentryExtraContextProvider-singleton

Startup times

Revision	Plain	With Sentry	Diff
c68ec87	1232.06 ms	1262.98 ms	30.92 ms

App size

Revision	Plain	With Sentry	Diff
c68ec87	22.85 KiB	405.44 KiB	382.59 KiB

[brustolin]

Something broke CI

[brustolin]

LGTM