feat(filters): the any/all switch sits on the panel above its picker

ui/MatchToggle replaces the Combobox popover footer (Feed tags, topics,
languages; Plex collections) and PlexSidebar's own toggle (genres,
actors): shown from two picks, one wording. A closed picker had hidden
that "all" was on.

frontend/src/components/ui/Combobox.tsx

@@ -61,11 +61,6 @@ export interface ComboboxProps {
   /** Chip/label text for a selected value whose option is not in the current (e.g. server-narrowed)
    *  list — the collection picker passes the stored title here so a reloaded filter still names itself. */
   selectedLabels?: Record<string, string>;
-  /** Optional "any/all" match segment in the popover footer (like SortControl's direction segment):
-   *  "or" = a match on ANY selected value, "and" = must match ALL. Provide BOTH to show it; it appears
-   *  only once 2+ values are selected (below that, any and all are the same). */
-  matchMode?: "or" | "and";
-  onMatchModeChange?: (mode: "or" | "and") => void;
 }
 
 export default function Combobox({
@@ -84,8 +79,6 @@ export default function Combobox({
   maxVisible = 50,
   renderOption,
   selectedLabels,
-  matchMode,
-  onMatchModeChange,
 }: ComboboxProps) {
   const { t } = useTranslation();
   const [open, setOpen] = useState(false);
@@ -299,32 +292,6 @@ export default function Combobox({
             </>
           )}
         </div>
-        {/* Any/all match segment (like SortControl's direction footer) — only meaningful, so only shown,
-            once 2+ values are picked. mousedown-preventDefault keeps the input focused so the list stays
-            open in the combobox's focus model. */}
-        {matchMode != null && onMatchModeChange && selected.length >= 2 && (
-          <div className="mt-1 flex items-center gap-2 border-t border-border px-1 pt-2">
-            <span className="text-2xs text-muted">{t("common.matchMode")}</span>
-            <div className="ml-auto flex gap-1">
-              {(["or", "and"] as const).map((m) => (
-                <button
-                  key={m}
-                  type="button"
-                  aria-pressed={matchMode === m}
-                  onMouseDown={(e) => e.preventDefault()}
-                  onClick={() => onMatchModeChange(m)}
-                  className={`rounded-md border px-2 py-0.5 text-2xs transition ${
-                    matchMode === m
-                      ? "border-accent bg-accent/15 text-accent"
-                      : "border-border text-muted hover:border-accent/50 hover:text-fg"
-                  }`}
-                >
-                  {t(m === "or" ? "sidebar.any" : "sidebar.all")}
-                </button>
-              ))}
-            </div>
-          </div>
-        )}
       </PopoverSurface>
     </div>
   );