fix: windows native method need default result

[wangbax]

📜 Description

When flutter is natively connected, the unimplemented logic needs to call back NotImplemented by default, otherwise it will be stuck in await.

💡 Motivation and Context

Pending line: https://github.com/getsentry/sentry-dart/blob/main/dart/lib/src/sentry_tracer.dart#L102
Link code: sentry_native_channel

💚 How did you test it?

• Init set SentryFlutter.init.options.debug = true
• Check log print

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

no op

#skip-changelog

[codecov-commenter]

Codecov Report

Merging #943 (ea15960) into main (287b3ad) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #943      +/-   ##
==========================================
- Coverage   89.81%   89.80%   -0.01%     
==========================================
  Files         104       95       -9     
  Lines        3211     3042     -169     
==========================================
- Hits         2884     2732     -152     
+ Misses        327      310      -17     

Impacted Files	Coverage Δ
logging/lib/src/logging_integration.dart
dio/lib/src/sentry_dio_extension.dart
dio/lib/src/dio_event_processor.dart
logging/lib/src/extension.dart
dio/lib/src/breadcrumb_client_adapter.dart
dio/lib/src/sentry_dio_client_adapter.dart
dio/lib/src/sentry_transformer.dart
dio/lib/src/tracing_client_adapter.dart
dio/lib/src/failed_request_interceptor.dart

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[marandaneto]

@wangbax please add a changelog entry :) it's a user facing fix.

[wangbax]

@marandaneto has done. 😊