Pool/SNOW-937183 Prevent evicted connections from returning to the pool

[sfc-gh-knozderko]

Description

Prevent evicted connections from returning to the pool

Checklist

• Code compiles correctly
• Code is formatted according to Coding Conventions
• Created tests which fail without the change (if possible)
• All tests passing (dotnet test)
• Extended the README / documentation, if necessary
• Provide JIRA issue id (if possible) or GitHub issue id in PR name

[codecov]

Codecov Report

Attention: Patch coverage is 95.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 82.49%. Comparing base (b842cbd) to head (b765c1b).

Files	Patch %	Lines
Snowflake.Data/Core/Session/SessionPool.cs	85.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@                         Coverage Diff                          @@
##           pool/SNOW-860872-connection-pool     #912      +/-   ##
====================================================================
+ Coverage                             82.37%   82.49%   +0.12%     
====================================================================
  Files                                   104      104              
  Lines                                  9876     9916      +40     
  Branches                                912      917       +5     
====================================================================
+ Hits                                   8135     8180      +45     
+ Misses                                 1491     1488       -3     
+ Partials                                250      248       -2     

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