Fix SQLClient unplanned behaviors

[lucas-zimerman]

This PR will fix the following issues found during dogfooding:

• The first Query span is lost.
  : It happens because oftentimes the event got invoked before the Connection event.
  : FIX: create the Query on the Transaction if a connection is not found, afterwards, set the correct parent once the query is closed.

• Missing Connection Span
  : The span was opened correctly but in case of data insertion or exclusion, the event related to closing the connection wasn't invoked, instead, another event gets invoked WriteTransactionCommitAfter.
  : FIX: Close the Connection span once WriteTransactionCommitAfter is invoked.

• Many Connection Spans with the same connection Id:
  : Not sure why, perhaps since the connection might be shared, it closes to continue the execution of another query from another request and return to open the previous one once finished.
  : FIX: Set the connection Id to the Connection Span if another Span with the same Connection Id isn't found.

PS: Had to change the setter from the SpanTrace.parentId to internal in order to update the ParentID.

[codecov-commenter]

Codecov Report

Merging #1179 (af93c89) into main (38bd5e2) will increase coverage by 0.02%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##             main    #1179      +/-   ##
==========================================
+ Coverage   80.48%   80.51%   +0.02%     
==========================================
  Files         212      212              
  Lines        6851     6887      +36     
  Branches     1565     1571       +6     
==========================================
+ Hits         5514     5545      +31     
  Misses        823      823              
- Partials      514      519       +5     

Impacted Files	Coverage Δ
...ce/Internals/DiagnosticSource/SentrySqlListener.cs	83.73% <84.61%> (-0.36%)	⬇️
src/Sentry/SpanTracer.cs	88.63% <100.00%> (+0.26%)	⬆️
...Internals/DiagnosticSource/SentryEFCoreListener.cs	83.01% <0.00%> (-1.89%)	⬇️
src/Sentry/GlobalSessionManager.cs	69.86% <0.00%> (+0.43%)	⬆️
src/Sentry/Internal/BackgroundWorker.cs	84.05% <0.00%> (+0.72%)	⬆️

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[lucas-zimerman]

I had to initialize by default the Extra parameter from SpanTracer due to the chance of data loss when inserting data when the parameter wasn't created.
That was the main issue with the test since it relies on the extra parameters to correctly link the spans.

[bruno-garcia]

Why iterate over connectionSpans twice inside this if?
this can have 1k items in it, looks highly inefficient with so many LINQ calls per execution

[lucas-zimerman]

The first iteration checks if there're any connection Spans with the given connection ID, if none is found it grabs the connection span with the given Operation ID and sets the connection ID.

I don't think you can perform both checks with only one iteration