[iOS Export] Fix adding static libs to the Xcode project.

(cherry picked from commit 30babfc789ad98adccc8c2f7be02849b8c841a84)

platform/ios/export/export_plugin.cpp

@@ -1220,7 +1220,7 @@ Error EditorExportPlatformIOS::_export_additional_assets(const String &p_out_dir
 		if (asset.begins_with("res://")) {
 			Error err = _copy_asset(p_out_dir, asset, nullptr, p_is_framework, p_should_embed, r_exported_assets);
 			ERR_FAIL_COND_V(err, err);
-		} else if (ProjectSettings::get_singleton()->localize_path(asset).begins_with("res://")) {
+		} else if (asset.is_absolute_path() && ProjectSettings::get_singleton()->localize_path(asset).begins_with("res://")) {
 			Error err = _copy_asset(p_out_dir, ProjectSettings::get_singleton()->localize_path(asset), nullptr, p_is_framework, p_should_embed, r_exported_assets);
 			ERR_FAIL_COND_V(err, err);
 		} else {