[Port main->6.0] Enhance TDS Login ClientInterfaceName field with client info

[paulmedynski]

Port of PR #3149 from main to release/6.0:

• Added ClientInterface class that knows how to build a suitable TDS Login ClientInterfaceName value.
• Added tests for ClientInterface.
• Removed unnecessary SQL_PROVIDER_NAME constant.

Spec is here: https://microsoft.sharepoint-df.com/:w:/t/sqldevx/EZYUHqdnoXhKoQv0kxcM1QUB2V_uTCWN9GHfrDQY2tojmA?e=tf4xco

Additional changes:

• Upgraded a few test dependencies to avoid vulnerabilities.

[Copilot]

PR Overview

This PR ports changes from main to release/6.0 to enhance the TDS Login ClientInterfaceName field behavior, update related tests, and remove obsolete constants. Key changes include:

• Introducing the ClientInterface class and a new test (ConnectionOpen_ClientInterfaceName) to validate its behavior.
• Replacing TdsEnums.SQL_PROVIDER_NAME with Common.DbConnectionStringDefaults.ApplicationName in error reporting and source properties.
• Removing the SQL_PROVIDER_NAME constant from TdsEnums and updating TdsParser to use ClientInterface.Name.

Reviewed Changes

File	Description
src/Microsoft.Data.SqlClient/tests/FunctionalTests/SqlConnectionBasicTests.cs	Added test to verify the ClientInterfaceName in the LOGIN7 packet
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlException.cs	Updated the Source property to use the new application name
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlError.cs	Updated error source from SQL_PROVIDER_NAME to ApplicationName
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsEnums.cs	Removed the obsolete SQL_PROVIDER_NAME constant
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs	Updated clientInterfaceName assignment to use ClientInterface.Name
src/Microsoft.Data.SqlClient/tests/tools/TDS/TDS.Servers/GenericTDSServer.cs	Added a delegate for processing and capturing validated LOGIN7 requests

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/TdsParser.cs:125

• Consider adding a validation to ensure that the length of ClientInterface.Name does not exceed TdsEnums.MAXLEN_CLIENTINTERFACE, similar to the previous debug assert.

string clientInterfaceName = ClientInterface.Name;

[codecov]

Codecov Report

Attention: Patch coverage is 89.47368% with 8 lines in your changes missing coverage. Please review.

Project coverage is 72.64%. Comparing base (cfb007d) to head (2297191).
Report is 3 commits behind head on release/6.0.

Files with missing lines	Patch %	Lines
...nt/src/Microsoft/Data/SqlClient/ClientInterface.cs	89.04%	8 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release/6.0    #3200      +/-   ##
===============================================
- Coverage        72.78%   72.64%   -0.15%     
===============================================
  Files              285      286       +1     
  Lines            59162    59235      +73     
===============================================
- Hits             43064    43034      -30     
- Misses           16098    16201     +103     

Flag	Coverage Δ
addons	92.58% <ø> (ø)
netcore	75.46% <89.47%> (-0.08%)	⬇️
netfx	71.05% <86.48%> (-0.12%)	⬇️

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