Fix some typescript issues (#32586)

Fixes around 30 or so typescript errors. No runtime changes.

web_src/js/features/autofocus-end.ts

@@ -1,5 +1,5 @@
 export function initAutoFocusEnd() {
-  for (const el of document.querySelectorAll('.js-autofocus-end')) {
+  for (const el of document.querySelectorAll<HTMLInputElement>('.js-autofocus-end')) {
     el.focus(); // expects only one such element on one page. If there are many, then the last one gets the focus.
     el.setSelectionRange(el.value.length, el.value.length);
   }