iOS: Enable Storyboard launch screen by default

LaunchImages are deprecated, and Storyboard is supported on all currently
supported iOS versions, so this should be the default.

LaunchImages support was removed in 4.3 with #86312.

platform/ios/export/export_plugin.cpp

@@ -235,7 +235,7 @@ void EditorExportPlatformIOS::get_export_options(List<ExportOption> *r_options)
 			r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, icon_infos[i].preset_key, PROPERTY_HINT_FILE, "*.png,*.jpg,*.jpeg"), ""));
 		}
 	}
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "storyboard/use_launch_screen_storyboard"), false, true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "storyboard/use_launch_screen_storyboard"), true, true));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "storyboard/image_scale_mode", PROPERTY_HINT_ENUM, "Same as Logo,Center,Scale to Fit,Scale to Fill,Scale"), 0));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "storyboard/custom_image@2x", PROPERTY_HINT_FILE, "*.png,*.jpg,*.jpeg"), ""));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "storyboard/custom_image@3x", PROPERTY_HINT_FILE, "*.png,*.jpg,*.jpeg"), ""));