Fix: Fixed bug where repository names lost casing or kept .git

[marcofranzen99]

Resolved / Related Issues

• Closes Bug: Git repository directory name contains .git suffix #17386

Steps used to test these changes

1. Used the clone action from the command palette (or drag and drop the URL)
2. Pasted url https://github.com/files-community/Files.git or https://github.com/files-community/Files
3. Verified that casing was preserved (uppercase F) and the .git suffix was removed.

[yaira2]

These changes appear to block the ability to drag URLs like https://github.com/files-community/Files/pull/17421. The feature was initially implemented to support dragging URLs even if they weren't the root of the repo.