Avoid invoking ActiveSupport::BroadcastLogger if not defined

[PetrHeinz]

Description

When ::ActiveSupport::BroadcastLogger is not defined (Rails < 7.1) and ::Rails.logger instance has broadcasts method defined, initialization of Sentry-ruby fails on NameError: uninitialized constant ActiveSupport::BroadcastLogger (NameError).

I suggest changing the check to ::Rails.logger being an instance of ::ActiveSupport::BroadcastLogger (with a defined? check).

[codecov]

Codecov Report

Merging #2169 (6f46a71) into master (e082644) will increase coverage by 0.09%.
Report is 2 commits behind head on master.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2169      +/-   ##
==========================================
+ Coverage   97.30%   97.40%   +0.09%     
==========================================
  Files          97       98       +1     
  Lines        3638     3655      +17     
==========================================
+ Hits         3540     3560      +20     
+ Misses         98       95       -3     

Components	Coverage Δ
sentry-ruby	98.02% <ø> (+<0.01%)	⬆️
sentry-rails	94.98% <100.00%> (ø)
sentry-sidekiq	95.54% <ø> (+1.83%)	⬆️
sentry-resque	93.65% <ø> (+1.58%)	⬆️
sentry-delayed_job	94.36% <ø> (ø)
sentry-opentelemetry	100.00% <ø> (ø)

Files	Coverage Δ
sentry-rails/lib/sentry/rails/configuration.rb	97.14% <100.00%> (ø)

... and 4 files with indirect coverage changes

[st0012]

I wasn't aware the other loggers could also have braodcasts method too. Thanks for the fix 👍