### Godot version

4.1 dev3

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

Trying to move a folder results in moving error and it's not moved.
Regression from #75330

A fix already exists, but I'm opening an issue so it's not lost (the PR isn't ready and not very active).

### Steps to reproduce

1. Add 2 folders in filesystem
2. Move one folder into another one

### Minimal reproduction project

N/A
const HashMap<StringName, PropertyInfo> prop_info = ProjectSettings::get_singleton()->get_custom_property_info();
	for (const KeyValue<StringName, PropertyInfo> &E : prop_info) {
		if (E.value.hint == PROPERTY_HINT_FILE) {
			String old_path = GLOBAL_GET(E.key);
			if (p_renames.has(old_path)) {
				ProjectSettings::get_singleton()->set_setting(E.key, p_renames[old_path]);
			}
		};
	}
	
	List<PropertyInfo> property_list;
	ProjectSettings::get_singleton()->get_property_list(&property_list);
	for (const PropertyInfo &E : property_list) {
		if (E.name.begins_with("autoload/")) {
			
			
			String autoload = GLOBAL_GET(E.name);
			String autoload_singleton = autoload.substr(1, autoload.length());
			if (p_renames.has(autoload)) {
				ProjectSettings::get_singleton()->set_setting(E.name, p_renames[autoload]);
			} else if (autoload.begins_with("*") && p_renames.has(autoload_singleton)) {
				ProjectSettings::get_singleton()->set_setting(E.name, "*" + p_renames[autoload_singleton]);
			}
		}
	}
	ProjectSettings::get_singleton()->save();
}
String FileSystemDock::_get_unique_name(const FileOrFolder &p_entry, const String &p_at_path) {