feat(scope): Remove client parameter

[szokeasaurusrex]

We don't use the client parameter in the Scope's constructor, perhaps we can remove it and simplify the API. It is still possible to set the client with Scope.set_client.

BREAKING CHANGE: sentry_sdk.Scope no longer has a client parameter.

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[szokeasaurusrex]

This is just a small thing I noticed, feel free to close the PR if y'all think it is a bad idea

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.79%. Comparing base (cfbb8db) to head (39f141b).
Report is 2 commits behind head on potel-base.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff               @@
##           potel-base    #4449      +/-   ##
==============================================
- Coverage       84.80%   84.79%   -0.02%     
==============================================
  Files             144      144              
  Lines           14725    14728       +3     
  Branches         2343     2343              
==============================================
  Hits            12488    12488              
  Misses           1523     1523              
- Partials          714      717       +3     

Files with missing lines	Coverage Δ
sentry_sdk/scope.py	82.16% <100.00%> (-0.06%)	⬇️

... and 3 files with indirect coverage changes