Enable vector tests and validate ref assembly for vector APIs

[apoorvdeshmukh]

Description

This commit enable the vector tests against Azure SQLDb Instance add adds testcase to validate ref assembly for vector APIs.

Testing

Vector tests for backward compatibility scenarios and native testcases.

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[Copilot]

Pull Request Overview

This PR enables vector tests against Azure SQLDb instances and adds validation for vector API reference assemblies. The changes focus on making vector functionality testable in Azure environments and ensuring API completeness.

• Enables vector support for Azure SQL Database instances by updating the IsVectorSupported flag
• Adds DisableDiscoveryEnumeration = true to vector test methods to optimize test discovery
• Includes a new test case to validate vector API functionality and reference assembly completeness

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
NativeVectorFloat32Tests.cs	Adds DisableDiscoveryEnumeration to test attributes and includes new VectorAPITest method for API validation
DataTestUtility.cs	Enables vector support for Azure SQL Database by changing IsVectorSupported logic
SqlVector.cs	Fixes XML documentation comment reference path

[paulmedynski]

Small comment needed. I'm not sure if Copilot is correct with its suggestion.

[cheenamalhotra]

@apoorvdeshmukh please port this PR to release/6.1 as well on merge.

[cheenamalhotra]

@paulmedynski @apoorvdeshmukh I think JSON tests enablement will be done separately, and its not covered in this PR.

[paulmedynski]

One request.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.75%. Comparing base (cf2bdc7) to head (6dbb4db).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3559      +/-   ##
==========================================
- Coverage   63.19%   61.75%   -1.45%     
==========================================
  Files         274      269       -5     
  Lines       62478    61202    -1276     
==========================================
- Hits        39486    37797    -1689     
- Misses      22992    23405     +413     

Flag	Coverage Δ
addons	?
netcore	63.83% <ø> (-2.94%)	⬇️
netfx	64.57% <ø> (-1.60%)	⬇️

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