Make default palettes available for clean installs on MacOS (#1008)

* resolved issue where pixelorama_data folder is to registered on MacOS builds

* Reverted changes to workflows and added Mac Resource directory to search path for palettes

* format Global.gd with gdtoolkit

src/Autoload/Global.gd

@@ -659,6 +659,10 @@ func _init() -> void:
 	loaded_locales.sort()  # Make sure locales are always sorted
 	if OS.has_feature("template"):
 		root_directory = OS.get_executable_path().get_base_dir()
+	if OS.get_name() == "macOS":
+		data_directories.append(
+			root_directory.path_join("../Resources").path_join(CONFIG_SUBDIR_NAME)
+		)
 	data_directories.append(root_directory.path_join(CONFIG_SUBDIR_NAME))
 	if OS.get_name() in ["Linux", "FreeBSD", "NetBSD", "OpenBSD", "BSD"]:
 		# Checks the list of files var, and processes them.

src/Autoload/Palettes.gd

@@ -381,7 +381,7 @@ func _get_palette_files(path: String) -> PackedStringArray:
 	var dir := DirAccess.open(path)
 	var results: PackedStringArray = []
 
-	if not is_instance_valid(dir) or not dir.dir_exists(path):
+	if !dir:
 		return []
 
 	dir.list_dir_begin()