Do not attach headers if Span is NoOp

[marandaneto]

📜 Description

Do not attach headers if Span is NoOp

💡 Motivation and Context

getsentry/sentry-java#2376

💚 How did you test it?

📝 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

[brustolin]

LGTM

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	309.54 ms	351.08 ms	41.54 ms
Size	5.94 MiB	6.95 MiB	1.01 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
eb1a7c1	332.98 ms	381.55 ms	48.57 ms
613760b	373.42 ms	399.33 ms	25.92 ms
0db91cc	327.85 ms	387.31 ms	59.46 ms
379d7a8	327.10 ms	355.39 ms	28.29 ms
3e5ee37	317.56 ms	366.84 ms	49.28 ms
870f5eb	329.45 ms	369.29 ms	39.84 ms
abcdba3	354.68 ms	399.04 ms	44.36 ms
9c5aec6	287.33 ms	320.94 ms	33.61 ms
21845e2	345.08 ms	382.82 ms	37.74 ms
453e1bc	320.41 ms	372.73 ms	52.32 ms

App size

Revision	Plain	With Sentry	Diff
eb1a7c1	5.94 MiB	6.92 MiB	1005.76 KiB
613760b	5.94 MiB	6.92 MiB	1005.98 KiB
0db91cc	5.94 MiB	6.95 MiB	1.01 MiB
379d7a8	5.94 MiB	6.95 MiB	1.01 MiB
3e5ee37	5.94 MiB	6.92 MiB	1001.19 KiB
870f5eb	5.94 MiB	6.92 MiB	1005.77 KiB
abcdba3	5.94 MiB	6.95 MiB	1.01 MiB
9c5aec6	5.94 MiB	6.92 MiB	1001.61 KiB
21845e2	5.94 MiB	6.92 MiB	1003.77 KiB
453e1bc	5.94 MiB	6.95 MiB	1.01 MiB

[codecov-commenter]

Codecov Report

Base: 91.39% // Head: 91.44% // Increases project coverage by +0.04% 🎉

Coverage data is based on head (af6437f) compared to base (ccc09e4).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1143      +/-   ##
==========================================
+ Coverage   91.39%   91.44%   +0.04%     
==========================================
  Files           9        9              
  Lines         186      187       +1     
==========================================
+ Hits          170      171       +1     
  Misses         16       16              

Impacted Files	Coverage Δ
dio/lib/src/tracing_client_adapter.dart	85.71% <100.00%> (+0.71%)	⬆️

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