[6.1] WAM Broker changes

[cheenamalhotra]

Ports changes from #4288 to release/6.1 branch.

[Copilot]

Pull request overview

Ports WAM broker support for Entra ID authentication flows into the 6.1 release branch, including new configuration and test coverage, plus updates to MSAL dependencies and a WinForms repro app.

Changes:

• Adds WAM broker wiring (Windows-only) and an options-bag constructor to ActiveDirectoryAuthenticationProvider, including redirect-URI selection and parent-window forwarding.
• Adds useWamBroker parsing in SqlAuthenticationProviderManager and serializes tests that mutate the global auth-provider registry.
• Updates MSAL package versions and introduces a WinForms AzureSqlConnector sample app for manual validation.

Reviewed changes

Copilot reviewed 26 out of 28 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
tools/specs/Microsoft.Data.SqlClient.nuspec	Bumps MSAL version and adds Microsoft.Identity.Client.Broker package dependency.
src/Microsoft.Data.SqlClient/tests/UnitTests/Microsoft/Data/SqlClient/WamBrokerTests.cs	Adds unit tests validating WAM broker enablement/disablement behaviors and parent-window callback clearing.
src/Microsoft.Data.SqlClient/tests/UnitTests/Microsoft/Data/SqlClient/SqlAuthenticationProviderCollection.cs	Adds xUnit collection definition to serialize tests that mutate the global provider registry (UnitTests).
src/Microsoft.Data.SqlClient/tests/FunctionalTests/SqlAuthenticationProviderCollection.cs	Adds xUnit collection definition to serialize tests that mutate the global provider registry (FunctionalTests).
src/Microsoft.Data.SqlClient/tests/FunctionalTests/Microsoft.Data.SqlClient.FunctionalTests.csproj	Ensures the new FunctionalTests collection definition is compiled.
src/Microsoft.Data.SqlClient/tests/FunctionalTests/AADAuthenticationTests.cs	Serializes AAD functional tests to avoid global provider registry races.
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SqlAuthenticationProviderManager.cs	Parses useWamBroker from config and uses the options ctor when configured.
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/ActiveDirectoryAuthenticationProviderOptions.cs	Introduces the public options-bag type for provider construction.
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/ActiveDirectoryAuthenticationProvider.Windows.cs	Adds Windows-only parent HWND resolution (console/root-owner fallback) for MSAL UI parenting.
src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/ActiveDirectoryAuthenticationProvider.cs	Implements WAM broker enablement, redirect-URI selection, device-code timeout handling, and parent-window forwarding.
src/Microsoft.Data.SqlClient/src/Interop/Windows/User32/User32.cs	Adds minimal user32.dll interop for GetAncestor root-owner discovery.
src/Microsoft.Data.SqlClient/src/Interop/Windows/Kernel32/Kernel32.cs	Adds GetConsoleWindow interop for Windows console HWND discovery.
src/Microsoft.Data.SqlClient/netfx/src/Microsoft.Data.SqlClient.csproj	Includes new provider/options/interop sources and adds Microsoft.Identity.Client.Broker reference for netfx build.
src/Microsoft.Data.SqlClient/netcore/src/Microsoft.Data.SqlClient.csproj	Includes new provider/options/interop sources, adds broker reference, and extends IVT.
src/Microsoft.Data.SqlClient.sln	Updates solution metadata and adds the AzureSqlConnector app to the solution.
src/Directory.Packages.props	Bumps MSAL version and adds centralized version for Microsoft.Identity.Client.Broker.
doc/snippets/Microsoft.Data.SqlClient/ActiveDirectoryAuthenticationProviderOptions.xml	Adds XML doc snippets for the new options-bag type.
doc/snippets/Microsoft.Data.SqlClient/ActiveDirectoryAuthenticationProvider.xml	Adds XML docs for the new options-based constructor.
doc/apps/Directory.Packages.props	Adds central package management for doc/apps projects (SNI package versions).
doc/apps/AzureSqlConnector/README.md	Documents the new WinForms repro app (build/run/modes/usage).
doc/apps/AzureSqlConnector/Program.cs	App entry point; launches a mode selector and runs the chosen form.
doc/apps/AzureSqlConnector/ModeSelectorForm.cs	Startup dialog to choose UI-thread vs worker-thread connection mode.
doc/apps/AzureSqlConnector/MainFormWorker.Designer.cs	WinForms designer code for worker-thread connector form.
doc/apps/AzureSqlConnector/MainFormWorker.cs	Worker-thread connector variant using Task.Run + sync Open(), with DCF callback UX.
doc/apps/AzureSqlConnector/MainForm.Designer.cs	WinForms designer code for UI-thread connector form.
doc/apps/AzureSqlConnector/MainForm.cs	UI-thread connector variant supporting OpenAsync vs sync Open() modes.
doc/apps/AzureSqlConnector/IdentityQuery.cs	Shared identity-query SQL text used by both connector forms.
doc/apps/AzureSqlConnector/AzureSqlConnector.csproj	Adds the WinForms repro app project with conditional TFM selection and project references to SqlClient.

Files not reviewed (2)

• doc/apps/AzureSqlConnector/MainForm.Designer.cs: Generated file
• doc/apps/AzureSqlConnector/MainFormWorker.Designer.cs: Generated file

[Copilot]

Pull request overview

Copilot reviewed 26 out of 28 changed files in this pull request and generated 8 comments.

Files not reviewed (2)

• doc/apps/AzureSqlConnector/MainForm.Designer.cs: Generated file
• doc/apps/AzureSqlConnector/MainFormWorker.Designer.cs: Generated file

[Copilot]

Pull request overview

Copilot reviewed 26 out of 28 changed files in this pull request and generated 1 comment.

Files not reviewed (2)

• doc/apps/AzureSqlConnector/MainForm.Designer.cs: Generated file
• doc/apps/AzureSqlConnector/MainFormWorker.Designer.cs: Generated file