### Godot version

v4.1.rc2.official [46424488e]

### System information

Godot v4.1.rc2 - Linux Mint 20 (Ulyana) - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2060 SUPER (nvidia; 515.105.01) - Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz (8 Threads)

### Issue description

Dragging and dropping a file to a new position inside its current folder, or onto the icon for its current folder - when that folder is the project root folder :res// - will be treated as though you were dropping a different file with the same name.

Expectation: for nothing to happen.

Also tried it in 4.0.3 and 4.1-dev3, where it behaves as expected.

https://github.com/godotengine/godot/assets/64640811/90de1120-dd92-41b8-b202-db77c343103a

### Steps to reproduce

1. New or existing project.
2. Click and drag a file in :res// in FileSystem dock.
3. Drop the file back into :res//.
4. Be prompted to overwrite or rename.

### Minimal reproduction project

N/A
if (err != OK) {
			imports.clear();
			break;
		}
		String type;
		if (cf->has_section_key("remap", "type")) {
			type = cf->get_value("remap", "type");
		}
		if (import_type.is_empty()) {
			import_type = type;
		} else if (import_type != type) {
			
			imports.clear();
			break;
		}
		imports.push_back(fpath);
	}
	if (imports.size() == 0) {
		ImportDock::get_singleton()->clear();
	} else if (imports.size() == 1) {
		ImportDock::get_singleton()->set_edit_path(imports[0]);
	} else {
		ImportDock::get_singleton()->set_edit_multiple_paths(imports);
	}
	import_dock_needs_update = false;
}
void FileSystemDock::_feature_profile_changed() {
	_update_display_mode(true);
}
void FileSystemDock::set_file_sort(FileSortOption p_file_sort) {