use Trace.WriteLine for TraceDiagnosticLogger

[SimonCropp]

• force Trace in TraceDiagnosticLogger using #define TRACE
• this unlocks using Trace.WriteLine instead of iterating Listeners
• No longer need catch (ArgumentOutOfRangeException)
• Fixes race condition where the listener.WriteLine($"{logLevel,7}: {string.Format(message, args)}"); and listener.WriteLine(exception); can interleave with another Trace.WriteLine causing a confusing sequence of log lines.
• Add a test for TraceDiagnosticLogger

[codecov-commenter]

Codecov Report

Merging #1475 (fbe15d2) into main (8b4d317) will increase coverage by 0.06%.
The diff coverage is 100.00%.

❗ Current head fbe15d2 differs from pull request most recent head 33553a7. Consider uploading reports for the commit 33553a7 to get more accurate results

@@            Coverage Diff             @@
##             main    #1475      +/-   ##
==========================================
+ Coverage   84.23%   84.29%   +0.06%     
==========================================
  Files         219      219              
  Lines        7383     7380       -3     
  Branches     1415     1414       -1     
==========================================
+ Hits         6219     6221       +2     
+ Misses        728      724       -4     
+ Partials      436      435       -1     

Impacted Files	Coverage Δ
src/Sentry/Infrastructure/TraceDiagnosticLogger.cs	100.00% <100.00%> (+27.27%)	⬆️
src/Sentry/Internal/BackgroundWorker.cs	93.47% <0.00%> (+1.44%)	⬆️

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