Limit search pattern and directory recursion

[asbjornu]

Description

Narrow the scope of the search pattern to only include project files and limit directory recursion to 255 subdirectories to avoid infinite loops and subsequent PathTooLongException.

Related Issue

May fix GH-4411.

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[Copilot]

Pull Request Overview

This PR enhances the project file discovery mechanism by limiting the scope and depth of directory traversal to prevent infinite loops and PathTooLongException errors. The changes specifically target scenarios where directory recursion could become problematic.

• Introduces a maximum recursion depth limit of 255 subdirectories
• Narrows the search pattern from "*" to "*proj" to focus on actual project files
• Replaces the legacy SearchOption.AllDirectories with modern EnumerationOptions

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud