JS refactors (#22227)

- Replace all default exports with named exports, except for Vue SFCs
- Remove names from Vue SFCs, they are automatically inferred from the
filename
- Misc whitespace-related tweaks

web_src/js/features/colorpicker.js

@@ -1,4 +1,4 @@
-export default async function createColorPicker($els) {
+export async function createColorPicker($els) {
   if (!$els || !$els.length) return;
 
   await Promise.all([