[Eng] Fix pattern in when matching *.Autorest

[VeryEarly]

Description

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[Copilot]

Pull Request Overview

This PR fixes the regex pattern used for matching Autorest-related module directories.

• Corrects variable interpolation in the regex pattern for submodule name matching.

[Copilot]

The updated regex pattern is still enclosed in single quotes, which prevents variable interpolation. Consider using double quotes to enable variable expansion, e.g., -match "${subModuleNameTrimmed}.".

Suggested change

	$subModuleName = Get-ChildItem -Path $moduleRootPath -Directory | Where-Object { $_.Name -match '${subModuleNameTrimmed}\.' } | ForEach-Object { $_.Name }
	$subModuleName = Get-ChildItem -Path $moduleRootPath -Directory | Where-Object { $_.Name -match "${subModuleNameTrimmed}\." } | ForEach-Object { $_.Name }

[isra-fel]

The issue was with the single quotes - expressions are evaluated only in double quotes