Pass processed Breadcrumb to scope observer

[denrase]

📜 Description

• Pass processed breadcrumbs to scope oberver.

💡 Motivation and Context

Closes #1296

💚 How did you test it?

Unit tests

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.46 🎉

Comparison is base (d2f62d6) 89.36% compared to head (74426f1) 89.82%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1298      +/-   ##
==========================================
+ Coverage   89.36%   89.82%   +0.46%     
==========================================
  Files          45      155     +110     
  Lines        1580     5063    +3483     
==========================================
+ Hits         1412     4548    +3136     
- Misses        168      515     +347     

Impacted Files	Coverage Δ
dart/lib/src/scope.dart	96.72% <100.00%> (ø)
dart/lib/src/integration.dart	100.00% <0.00%> (ø)
...rt/lib/src/sentry_client_attachment_processor.dart	100.00% <0.00%> (ø)
dart/lib/src/protocol/span_status.dart	96.49% <0.00%> (ø)
...ib/src/sentry_attachment/io_sentry_attachment.dart	100.00% <0.00%> (ø)
dart/lib/src/protocol/contexts.dart	93.93% <0.00%> (ø)
dart/lib/src/protocol/sentry_operating_system.dart	100.00% <0.00%> (ø)
dart/lib/src/protocol/sentry_event.dart	100.00% <0.00%> (ø)
dart/lib/src/transport/rate_limit_parser.dart	95.83% <0.00%> (ø)
...t_processor/enricher/enricher_event_processor.dart	100.00% <0.00%> (ø)
... and 101 more

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[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	295.00 ms	340.52 ms	45.52 ms
Size	6.06 MiB	7.09 MiB	1.03 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
8fa3934	340.64 ms	407.92 ms	67.28 ms
fbf42af	323.04 ms	365.09 ms	42.04 ms
21d4150	379.31 ms	449.23 ms	69.93 ms
08a7b4f	346.47 ms	403.29 ms	56.82 ms
9811573	309.76 ms	402.60 ms	92.84 ms
c70e01a	331.04 ms	401.46 ms	70.42 ms
48e79fd	354.22 ms	391.46 ms	37.24 ms
3637a22	322.59 ms	390.00 ms	67.41 ms
4efee31	308.92 ms	368.68 ms	59.76 ms
6d7a391	331.94 ms	367.04 ms	35.10 ms

App size

Revision	Plain	With Sentry	Diff
8fa3934	6.06 MiB	7.09 MiB	1.03 MiB
fbf42af	5.94 MiB	6.96 MiB	1.02 MiB
21d4150	5.94 MiB	6.97 MiB	1.03 MiB
08a7b4f	5.94 MiB	6.95 MiB	1.01 MiB
9811573	5.94 MiB	6.96 MiB	1.02 MiB
c70e01a	5.94 MiB	6.97 MiB	1.03 MiB
48e79fd	5.94 MiB	6.95 MiB	1.01 MiB
3637a22	6.06 MiB	7.09 MiB	1.03 MiB
4efee31	5.94 MiB	6.92 MiB	1003.76 KiB
6d7a391	5.94 MiB	6.95 MiB	1.01 MiB

Previous results on branch: fix/sync-processed-breadcrumbs

Startup times

Revision	Plain	With Sentry	Diff
f1d95f0	374.73 ms	452.70 ms	77.96 ms

App size

Revision	Plain	With Sentry	Diff
f1d95f0	6.06 MiB	7.09 MiB	1.03 MiB

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1269.49 ms	1288.79 ms	19.30 ms
Size	8.10 MiB	9.07 MiB	1000.81 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
21845e2	1279.37 ms	1298.81 ms	19.45 ms
b47809a	1252.61 ms	1278.57 ms	25.96 ms
49a149b	1296.47 ms	1320.20 ms	23.73 ms
5603ab2	1268.47 ms	1280.73 ms	12.26 ms
b728df4	1287.43 ms	1293.94 ms	6.51 ms
21d4150	1252.86 ms	1280.55 ms	27.69 ms
1edf30e	1254.43 ms	1272.82 ms	18.39 ms
ccc09e4	1254.74 ms	1277.08 ms	22.34 ms
a49594a	1284.83 ms	1313.29 ms	28.45 ms
c70e01a	1273.00 ms	1299.12 ms	26.12 ms

App size

Revision	Plain	With Sentry	Diff
21845e2	8.15 MiB	9.12 MiB	991.34 KiB
b47809a	8.16 MiB	9.17 MiB	1.01 MiB
49a149b	8.15 MiB	9.12 MiB	986.26 KiB
5603ab2	8.15 MiB	9.12 MiB	990.57 KiB
b728df4	8.15 MiB	9.15 MiB	1020.72 KiB
21d4150	8.16 MiB	9.17 MiB	1.01 MiB
1edf30e	8.16 MiB	9.17 MiB	1.01 MiB
ccc09e4	8.16 MiB	9.16 MiB	1.01 MiB
a49594a	8.16 MiB	9.16 MiB	1.00 MiB
c70e01a	8.16 MiB	9.17 MiB	1.01 MiB