fix(profiling): Update active thread for asgi

[Zylphrex]

Ensure the handling thread is set on the transaction for asgi transactions not just main thread.

[codecov]

Codecov Report

Attention: Patch coverage is 82.60870% with 4 lines in your changes missing coverage. Please review.

Project coverage is 84.34%. Comparing base (f5e964f) to head (1d09578).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/quart.py	66.66%	0 Missing and 2 partials ⚠️
sentry_sdk/integrations/fastapi.py	66.66%	0 Missing and 1 partial ⚠️
sentry_sdk/integrations/starlette.py	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3669      +/-   ##
==========================================
+ Coverage   84.31%   84.34%   +0.02%     
==========================================
  Files         133      133              
  Lines       14241    14257      +16     
  Branches     2400     2405       +5     
==========================================
+ Hits        12008    12025      +17     
+ Misses       1487     1482       -5     
- Partials      746      750       +4     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/django/asgi.py	87.73% <100.00%> (+0.35%)	⬆️
sentry_sdk/integrations/django/views.py	91.48% <100.00%> (+0.58%)	⬆️
sentry_sdk/tracing.py	85.18% <100.00%> (+0.06%)	⬆️
sentry_sdk/integrations/fastapi.py	89.15% <66.66%> (-0.85%)	⬇️
sentry_sdk/integrations/starlette.py	84.68% <75.00%> (-0.16%)	⬇️
sentry_sdk/integrations/quart.py	82.35% <66.66%> (+2.01%)	⬆️

... and 2 files with indirect coverage changes

[antonpirker]

Looks good. Thanks for updating the tests everywhere.