test(quick-261022-k9k): keyboard shortcut coverage

- hotkey core: combos, AltGr and layouts, labels, aria-keyshortcuts, editable
  targets, modal root, refcounted install, disabled and repeat
- smoke: record, create, Create and new (new session key), Esc, modal scope,
  settings Save and close, My account, list search and the help dialog
- ShortcutHelpDialog rows, keys and close button

admin/tests/helpers.ts

@@ -117,6 +117,13 @@ export function keydown(target: Element, key: string): KeyboardEvent {
   return event
 }
 
+/** Dispatches a bubbling, cancelable keydown with extra init (modifiers, code, repeat) and returns the event. */
+export function press(target: Element, key: string, init: KeyboardEventInit = {}): KeyboardEvent {
+  const event = new KeyboardEvent('keydown', { key, bubbles: true, cancelable: true, ...init })
+  target.dispatchEvent(event)
+  return event
+}
+
 export const wait = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms))
 
 type MediaListener = (event: MediaQueryListEvent) => void