Fix: Fixed issue where process details weren't displayed when deleting folders with open files

[workbysaran]

Resolved / Related Issues
Enhance the delete operation to show which specific file is locked and which application is using it when attempting to delete a folder containing locked files.

Closes #9444

Steps used to test these changes

1. Single file deletion

   • Open a file in Microsoft Word
   • Try to delete the file
   • Verify error shows: "The file you are attempting to access is currently being used by Microsoft Word (PID: XXXXX)"

2. Folder deletion with locked file

   • Create a folder with multiple sub folders & files
   • Open one file inside the folder with Microsoft Word
   • Try to delete the entire folder
   • Verify error now shows: "The file you are attempting to access is currently being used by Microsoft Word (PID: XXXXX)"
   • Verify the specific locked file path is displayed

[Copilot]

Pull Request Overview

This PR enhances the file-in-use detection for delete operations by recursively checking files within directories. When a directory deletion fails due to files being in use, the code now enumerates all files within that directory to identify which specific files are locked, rather than just reporting the directory itself.

• Introduces recursive file enumeration for directories that fail to delete due to "InUse" status
• Maintains backward compatibility by falling back to original behavior if no files are found
• Adds error handling for directory enumeration failures

Comments suppressed due to low confidence (2)

src/Files.App/Utils/Storage/Operations/ShellFilesystemOperations.cs:429

• Poor error handling: empty catch block.

							catch { }

src/Files.App/Utils/Storage/Operations/ShellFilesystemOperations.cs:429

• Generic catch clause.

							catch { }

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[yaira2]

LGTM