adding GetDomainFromContext cDAC API

[rcj1]

No description provided.

[Copilot]

Pull Request Overview

Adds a managed implementation of GetDomainFromContext in SOSDacImpl with basic argument validation, assignment logic, and debug-only comparisons against the legacy DAC.

• Introduces a full-method body replacing the one-liner forward to _legacyImpl
• Validates inputs and sets the output pointer, capturing exceptions as HRESULTs
• Adds debug-only assertions to compare results with the legacy implementation

Comments suppressed due to low confidence (1)

src/native/managed/cdac/mscordaccore_universal/Legacy/SOSDacImpl.cs:247

• Add unit tests to cover the invalid-argument path (when context is zero or domain is null) and the exception path to verify the correct HRESULT is returned.

        if (context == 0 || domain == null)

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[max-charlamb]

Looks good mod that one comment