ref(flags): rename launch darkly hook to match JS SDK

[aliu39]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.94%. Comparing base (7022446) to head (22a190a).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3743      +/-   ##
==========================================
- Coverage   79.94%   79.94%   -0.01%     
==========================================
  Files         137      137              
  Lines       15421    15421              
  Branches     2614     2614              
==========================================
- Hits        12329    12328       -1     
  Misses       2223     2223              
- Partials      869      870       +1     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/launchdarkly.py	79.48% <100.00%> (ø)

... and 1 file with indirect coverage changes

[antonpirker]

@cmanallen is this fine with you?

[antonpirker]

And @aliu39 is this ready for review, because it is a draft?