[clr-interp] More minimal tweak for enabling debug stack walking

[davidwrighton]

• This just enables the StubPrecode::GetMethodDesc api, as well as ExecutionManager::GetCodeMethodDesc
• It is enough for !clrstack to work correctly

[Copilot]

Pull Request Overview

This PR enables minimal debug stack walking support for the CLR interpreter by exposing necessary APIs for the !clrstack debugging command. The changes focus on enabling the StubPrecode::GetMethodDesc API and ExecutionManager::GetCodeMethodDesc to work with interpreter precodes.

Key changes:

• Add support for interpreter precode handling in StubPrecode
• Enhance ExecutionManager::GetCodeMethodDesc to recognize interpreter precodes
• Add constructor overload to EECodeInfo for scan flag support

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/coreclr/vm/precode.h	Adds forward declaration for InterpreterPrecode, AsInterpreterPrecode method, and updates GetMethodDesc to handle interpreter precodes
src/coreclr/vm/codeman.h	Adds new constructor overload for EECodeInfo that accepts ExecutionManager::ScanFlag
src/coreclr/vm/codeman.cpp	Implements interpreter precode detection and handling in ExecutionManager::GetCodeMethodDesc

Comments suppressed due to low confidence (1)

src/coreclr/vm/precode.h:353

• The typedef for PTR_InterpreterPrecode is being removed here but it was moved to line 90. However, this creates a potential issue where the typedef is now defined before the actual InterpreterPrecode struct definition (which appears later in the file), which could cause compilation errors.

inline PTR_InterpreterPrecode StubPrecode::AsInterpreterPrecode()

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