### 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 (fpath == main_scene) {
			files->set_item_custom_fg_color(item_index, get_theme_color(SNAME("accent_color"), SNAME("Editor")));
		}
		
		if (!finfo->import_broken) {
			Array udata;
			udata.resize(2);
			udata[0] = item_index;
			udata[1] = fname;
			EditorResourcePreview::get_singleton()->queue_resource_preview(fpath, this, "_file_list_thumbnail_done", udata);
		}
		
		if (cselection.has(fname)) {
			files->select(item_index, false);
		}
		if (!p_keep_selection && !file.is_empty() && fname == file) {
			files->select(item_index, true);
			files->ensure_current_is_visible();
		}
		
		if (finfo->sources.size()) {
			for (int j = 0; j < finfo->sources.size(); j++) {
				tooltip += "\nSource: " + finfo->sources[j];
			}
		}
		files->set_item_tooltip(item_index, tooltip);
	}
}
void FileSystemDock::_select_file(const String &p_path, bool p_select_in_favorites) {