Generate rank information in BulkType events

[MichalStrehovsky]

Port dotnet/coreclr#27516 to native AOT.

Cc @dotnet/ilc-contrib

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[Copilot]

Pull Request Overview

This PR ports support for encoding array rank information in BulkType ETW events to Native AOT.
Key changes include:

• Expose GetParameterizedTypeShape and GetArrayRank in MethodTable
• Define new ETW type flags for array ranks in eventtracebase.h
• Update BulkTypeEventLogger to set rank bits for multidimensional arrays
• Implement GetArrayRank logic in MethodTable.cpp

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/coreclr/nativeaot/Runtime/inc/MethodTable.h	Added declarations for GetParameterizedTypeShape and GetArrayRank
src/coreclr/nativeaot/Runtime/eventtracebase.h	Introduced enum flags/masks for array rank encoding
src/coreclr/nativeaot/Runtime/eventtrace_bulktype.cpp	Updated BulkType logger to set array rank bits
src/coreclr/nativeaot/Runtime/MethodTable.cpp	Added implementation of GetArrayRank

Comments suppressed due to low confidence (3)

src/coreclr/nativeaot/Runtime/inc/MethodTable.h:200

• [nitpick] Add a brief doc comment explaining that this returns the raw base size used to compute element storage (including bounds for parameterized types).

    uint32_t GetParameterizedTypeShape()

src/coreclr/nativeaot/Runtime/inc/MethodTable.h:217

• [nitpick] Add a doc comment describing how this computes the array rank (1 for SZ arrays, >1 for multidimensional).

    uint32_t GetArrayRank();

src/coreclr/nativeaot/Runtime/eventtrace_bulktype.cpp:305

• Add unit or integration tests to cover multidimensional array ranks being encoded correctly in BulkTypeEventLogger, especially for ranks >1.

                uint32_t rank = pEEType->GetArrayRank();

[Copilot]

Add an ASSERT to verify that boundsSize % (2 * sizeof(uint32_t)) == 0 to catch unexpected shape values and ensure the division yields an integer dimension count.

Suggested change

	{
	{
	// Ensure boundsSize is divisible by (2 * sizeof(uint32_t)).
	ASSERT(boundsSize % (2 * sizeof(uint32_t)) == 0);

[MichalStrehovsky]

/ba-g the HostActivation failure is likely #116520 and unrelated