Fix reimport by scan parsing dependency paths incorrectly

[Jordyfel]

Fix #92250
maybe other reimport related issues?

Resource loader's get_dependencies returns a string in the format uid::type::path (or path::type, or path only), but this code was not taking it into account.

Invalid strings were being passed into the reimport_files function. Since that function supports uids, they are now passed when possible.

The _update_file_icon_path function had no symptoms because of missing script uids, but would break when they are added.

[passivestar]

Tested, this does solve the issue, the error messages are gone, thanks 💙

[akien-mga]

Thanks!