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/comp/SearchUserBox.js

@@ -2,7 +2,6 @@ import $ from 'jquery';
 import {htmlEscape} from 'escape-goat';
 
 const {appSubUrl} = window.config;
-
 const looksLikeEmailAddressCheck = /^\S+@\S+$/;
 
 export function initCompSearchUserBox() {