Traces sample rate default change

[antonpirker]

Revert changing the default of traces_sample_rate done in #4240

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.36%. Comparing base (a5d0f01) to head (8ed0782).
Report is 1 commits behind head on potel-base.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff               @@
##           potel-base    #4335      +/-   ##
==============================================
- Coverage       84.42%   84.36%   -0.07%     
==============================================
  Files             144      144              
  Lines           14636    14636              
  Branches         2327     2327              
==============================================
- Hits            12357    12348       -9     
- Misses           1553     1560       +7     
- Partials          726      728       +2     

Files with missing lines	Coverage Δ
sentry_sdk/consts.py	99.54% <ø> (ø)

... and 4 files with indirect coverage changes