Implement CLRDataMethodInstance APIs in cDAC

[Copilot]

Implements CLRDataMethodInstance.GetDefinition and GetAddressRangesByILOffset using cDAC contracts.

Changes

• Method definitions

  • Resolves the defining module and metadata token from the MethodDesc.
  • Preserves legacy child-object fallback and debug HRESULT validation.

• IL address ranges

  • Produces native ranges from debug-info IL mappings.
  • Matches native DAC buffer, epilog, and E_NOINTERFACE semantics.
  • Cross-validates results against the legacy DAC in debug builds.

• Coverage

  • Adds dump tests for metadata resolution, matching address ranges, and missing IL offsets.

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