Fix no parsing expressions again when passed to an adapted resource

[SteveL-MSFT]

PR Summary

The problem is when it comes to implicit use of adapted resources, the DSC engine internally creates a Configuration and executes that. However, the outer Configuration has already had expressions parsed so that [[this is a string literal] becomes [this is a string literal] and the nested configuration tries to parse that again and fails because it's invalid. The change is to have a new property on the Configurator indicating whether to process expressions and only in the case of a dynamically created Configurator for implicit adapted resources do we want to NOT process them as it was already processed by the parent Configurator.

This change adds a new property to Context to indicate whether parse_and_execute() should process the expression or simply return the string back.

Some tests unrelated to this change were found to be wrong and fixed.

PR Context

Fix #1024

[Copilot]

Pull Request Overview

This PR fixes expression parsing for adapted resources by preventing double processing of DSC expressions. When adapted resources are used implicitly, the DSC engine creates a nested Configuration which attempts to re-parse expressions that were already processed by the parent Configuration, causing failures with string literals like [[this is a string literal].

• Adds a process_expressions flag to the Configurator to control expression processing
• Updates parse_and_execute() to accept a boolean parameter that bypasses expression processing when false
• Modifies adapted resource handling to disable expression processing for dynamically created configurators

Reviewed Changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
dsc_lib/src/parser/mod.rs	Core parser changes to add process_expressions parameter and early return logic
dsc_lib/src/configure/mod.rs	Adds process_expressions field to Configurator and updates all expression parsing calls
dsc_lib/src/dscresources/dscresource.rs	Sets process_expressions to false for adapted resource configurations
dsc_lib/src/configure/depends_on.rs	Updates dependency parsing calls to use new parameter
Test files	Updates all unit tests to pass true for the new process_expressions parameter
powershell-adapter/Tests/	Adds integration test and supporting test resource for the fix
dsc_lib/locales/en-us.toml	Adds localization string for debug message