[5.1] Update hardcoded index for TestMicrosoftDataSqlClientVersion property during validation

[paulmedynski]

Description

Our official builds perform a validation phase that executes a series of PowerShell scripts to cross-check a variety of different properties of the build artifacts. A few of these scripts use hardcoded indices into the XML structure of the csproj/props files, which is terribly fragile. This PR aligns one of these hardcoded indices with the actual props file.

Testing

A manual run of the official pipeline will confirm the fix.

[Copilot]

Pull request overview

This PR fixes a critical bug in the build validation pipeline where a hardcoded XML index was incorrectly referencing the wrong PropertyGroup in the Versions.props file. The script was using Count-1 to access the last PropertyGroup (index 8), when it should have been accessing index 2 where the TestMicrosoftDataSqlClientVersion property is actually defined.

Changes:

• Changed hardcoded index from PropertyGroup.Count-1 to PropertyGroup[2] to correctly target the AKV NuGet Package Version Information PropertyGroup
• Removed redundant comments that added no value

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.35%. Comparing base (d3aea3e) to head (a558a03).
⚠️ Report is 1 commits behind head on release/5.1.

Additional details and impacted files

@@               Coverage Diff               @@
##           release/5.1    #3883      +/-   ##
===============================================
- Coverage        71.15%   70.35%   -0.80%     
===============================================
  Files              293      293              
  Lines            61931    61931              
===============================================
- Hits             44066    43572     -494     
- Misses           17865    18359     +494     

Flag	Coverage Δ
addons	92.38% <ø> (ø)
netcore	74.37% <ø> (-0.12%)	⬇️
netfx	68.74% <ø> (-1.13%)	⬇️

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