fix(workflows): optimize project file discovery logic

[DecSmith42]

Replaced GetCurrentDirectory calls with AtomRootDirectory for accurate root resolution. Enhanced file enumeration with filters for .csproj files and added EnumerationOptions to handle recursion, inaccessible paths, and exclusion of special directories. This improves performance and ensures reliable project path resolution.

[Copilot]

Pull request overview

This pull request optimizes project file discovery logic by replacing unreliable current directory detection with a root-based approach using AtomRootDirectory, and enhancing the file search with proper filtering and enumeration options.

Key Changes

• Replaced GetCurrentDirectory() with AtomRootDirectory for consistent root path resolution
• Added *.csproj file filter to EnumerateFiles to avoid scanning all files
• Configured EnumerationOptions with recursion depth limit, inaccessible path handling, and special directory exclusion

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
DecSm.Atom.Module.GithubWorkflows/Generation/GithubWorkflowWriter.cs	Updated FindProjectPath method with optimized file discovery using root directory and enumeration options
DecSm.Atom.Module.DevopsWorkflows/Generation/DevopsWorkflowWriter.cs	Updated FindProjectPath method with optimized file discovery using root directory and enumeration options

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