### 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
ERR_FAIL_COND_MSG(p_paths.is_empty(), "Path cannot be empty.");
	Vector<String> filenames;
	Vector<String> foldernames;
	Vector<String> favorites_list = EditorSettings::get_singleton()->get_favorites();
	bool all_files = true;
	bool all_files_scenes = true;
	bool all_folders = true;
	bool all_favorites = true;
	bool all_not_favorites = true;
	for (int i = 0; i < p_paths.size(); i++) {
		String fpath = p_paths[i];
		if (fpath.ends_with("/")) {
			foldernames.push_back(fpath);
			all_files = false;
		} else {
			filenames.push_back(fpath);
			all_folders = false;
			all_files_scenes &= (EditorFileSystem::get_singleton()->get_file_type(fpath) == "PackedScene");
		}
		
		bool found = false;
		for (int j = 0; j < favorites_list.size(); j++) {
			if (favorites_list[j] == fpath) {
				found = true;
				break;
			}
		}
		if (found) {