fix(i18n): numbers, units, dates and order in the UI language, and after a switch (E30 S3)

Every locale formatter takes the language as an argument. Under the React
Compiler a formatter that read the i18n singleton was memoized on its other
arguments, so a card kept "2 hr 4 min" after a switch to Hungarian; plexLang()
had the same flaw and left Plex queries in the old language. Components now
take the language from useTranslation, and the signature makes forgetting it
a type error.

- ratings, file sizes, stream stats: the language's decimal mark ("8,3")
- view and subscriber counts compact in the language ("1,2 E")
- seconds as the language's unit ("6 mp") in the sliders and the stats
- a person's birth and death dates as dates, not ISO strings
- A-Z lists by the shown name in the language's alphabet (compareText),
  the tag catalog re-sorted by its translated names
- lint local/locale-format (was date-format) also refuses Intl.NumberFormat
  outside lib/format.ts, localeCompare, and a component reading the language
  off the i18n singleton

frontend/src/lib/playlistView.ts

@@ -1,4 +1,5 @@
 import { sortRows, type SortState } from "./columnSort";
+import { compareText } from "./collate";
 
 // The playlist detail's VIEW derivation: what the reader sees, as opposed to the playlist's stored
 // order. Kept structural (no `Column`, no component imports) like `columnSort.ts`, so it stays pure
@@ -21,8 +22,9 @@ export function applyView<T extends Grouped>(
   columns: Sortable<T>[],
   sort: SortState,
   group: boolean,
+  lang: string,
 ): T[] {
-  const sorted = sortRows(rows, columns, sort);
+  const sorted = sortRows(rows, columns, sort, lang);
   if (!group) return sorted;
   const groups = new Map<string, T[]>();
   for (const v of sorted) {
@@ -32,7 +34,7 @@ export function applyView<T extends Grouped>(
     else groups.set(k, [v]);
   }
   const sign = sort?.dir === "desc" ? -1 : 1;
-  const keys = [...groups.keys()].sort((a, b) => sign * a.localeCompare(b));
+  const keys = [...groups.keys()].sort((a, b) => sign * compareText(a, b, lang));
   return keys.flatMap((k) => groups.get(k)!);
 }