frontend: preact 11.2.0

All four packages move from preact 10.29.8 to 11.2.0. The new types need four
small changes in swarm-ui and the shared dropdown: a ref that may be empty is
typed RefObject<T | null>, HTMLAttributes is imported from preact instead of
read from the JSX namespace, and TextField's type is the five kinds it is
used with, asserted once for the input's new union. npm-deps-hash follows the
lockfile.

frontend/packages/swarm-ui/src/ui/popover/Popover.tsx

@@ -45,7 +45,7 @@ export function Popover({
   onClose: () => void;
   /** The element the popover hangs under. A click on it is not an outside
    * click, so its own toggle handler stays in charge of closing. */
-  anchorRef: RefObject<HTMLElement>;
+  anchorRef: RefObject<HTMLElement | null>;
   /** `aria-label` for the floating box. */
   label: string;
   children: ComponentChildren;

frontend/packages/swarm-ui/src/ui/text-field/TextField.tsx

@@ -29,7 +29,7 @@ export function TextField({
   label: string;
   value: string;
   onInput: (value: string) => void;
-  type?: string;
+  type?: "text" | "password" | "number" | "url" | "datetime-local";
   pattern?: string;
   title?: string;
   required?: boolean;
@@ -46,7 +46,10 @@ export function TextField({
       <input
         id={id}
         class="ui-form-control"
-        type={type}
+        // preact 11 types `type` as a union that ties each kind to its own
+        // `list` and `role` attributes; the field takes any of its kinds and
+        // passes `list` only for suggestions, so the union is asserted here.
+        type={type as "text"}
         value={value}
         pattern={pattern}
         title={title}