UI: Only load legacy macOS .so plugins on x86_64

Plugins are expected to be in the .plugin bundle format. We do not want
to encourage usage of the old .so format, this is only kept at all for
backwards compatibility with existing plugins.

UI/window-basic-main.cpp

@@ -185,6 +185,7 @@ static void AddExtraModulePaths()
 		"obs-studio/plugins/%module%.plugin/Contents/Resources");
 	obs_add_module_path(config_bin, config_data);
 
+#ifndef __aarch64__
 	/* Legacy System Library Search Path */
 	obs_add_module_path((path + "/bin").c_str(), (path + "/data").c_str());
 
@@ -194,6 +195,7 @@ static void AddExtraModulePaths()
 	BPtr<char> config_data_legacy =
 		os_get_config_path_ptr("obs-studio/plugins/%module%/data");
 	obs_add_module_path(config_bin_legacy, config_data_legacy);
+#endif
 #else
 #if ARCH_BITS == 64
 	obs_add_module_path((path + "/bin/64bit").c_str(),