ci(flutter): skip integration tests on forks without auth token

[buenaflor]

Problem

In flutter_test.yml, the SENTRY_AUTH_TOKEN_E2E secret is unavailable on fork PRs (GitHub doesn't pass secrets to forks). Without a guard, the e2e/captureException test runs with an empty token, calls sentry.io/api/... for verification, and always fails.

All other integration tests use a fakeDsn and don't need the token — they should still run on forks.

Change

Added skip: authToken.isEmpty to the captureException testWidgets call inside the group('e2e', ...) block in integration_test.dart.

authToken is already a const String.fromEnvironment('SENTRY_AUTH_TOKEN_E2E'), so this is a compile-time skip with no runtime overhead. Everything else in the integration test suite continues to run on forks as-is.

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

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Features

• Add feature flags to hub span by denrase in #3806

Internal Changes

• (flutter) Skip integration tests on forks without auth token by buenaflor in #3860

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_{🤖 This preview updates automatically when you update the PR.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.50%. Comparing base (c652e19) to head (74298fb).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3860      +/-   ##
==========================================
+ Coverage   87.35%   91.50%   +4.15%     
==========================================
  Files         338      105     -233     
  Lines       12283     3803    -8480     
==========================================
- Hits        10730     3480    -7250     
+ Misses       1553      323    -1230     

Flag	Coverage Δ
sentry	?
sentry_dio	?
sentry_drift	?
sentry_file	?
sentry_firebase_remote_config	100.00% <ø> (ø)
sentry_flutter	91.10% <ø> (ø)
sentry_grpc	?
sentry_hive	?
sentry_isar	?
sentry_link	?
sentry_logging	?
sentry_sqflite	?
sentry_supabase	97.27% <ø> (ø)

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[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1253.14 ms	1254.58 ms	1.45 ms
Size	5.83 MiB	6.28 MiB	460.41 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
0f0a415	1228.28 ms	1233.51 ms	5.23 ms
5367726	1211.00 ms	1216.73 ms	5.73 ms
f80073a	1249.75 ms	1243.52 ms	-6.23 ms
d15266b	1247.42 ms	1251.29 ms	3.87 ms
2f63d89	1251.67 ms	1263.94 ms	12.27 ms
bfabaf2	1251.72 ms	1253.38 ms	1.67 ms
8af916c	1246.66 ms	1240.79 ms	-5.87 ms
9441966	1239.78 ms	1254.00 ms	14.22 ms
54acf91	1257.65 ms	1277.96 ms	20.31 ms
396cb30	1265.06 ms	1265.73 ms	0.67 ms

App size

Revision	Plain	With Sentry	Diff
0f0a415	5.83 MiB	6.28 MiB	458.16 KiB
5367726	5.73 MiB	6.17 MiB	455.87 KiB
f80073a	5.73 MiB	6.18 MiB	464.26 KiB
d15266b	5.83 MiB	6.28 MiB	462.36 KiB
2f63d89	5.65 MiB	6.09 MiB	446.25 KiB
bfabaf2	5.53 MiB	6.01 MiB	487.95 KiB
8af916c	5.73 MiB	6.18 MiB	463.84 KiB
9441966	5.83 MiB	6.28 MiB	459.62 KiB
54acf91	20.70 MiB	22.46 MiB	1.75 MiB
396cb30	5.53 MiB	6.01 MiB	488.17 KiB