fix(playlists): the list's name keeps its room on a narrow window

Below xl Unsynced is its dot; on a phone the cover is gone, Play all is its
glyph, the band's count is its number and the undo pair stays out. The name was
0 px wide in Hungarian at 768 and on any phone, and a tick moved the list there.

frontend/src/modules/playlists/Playlists.tsx

@@ -1174,7 +1174,9 @@ function PlaylistDetail() {
             cover plus a fourth block under it, for roughly twice this height. */}
           <div className="px-4 py-2 max-w-5xl mx-auto">
             <div className="flex gap-3 items-center">
-              <div className="w-20 h-11.25 rounded-lg bg-card overflow-hidden shrink-0">
+              {/* Off on a phone, and the state's word and Play all's shrink: past them the list's name had
+                no width left at all. */}
+              <div className="hidden w-20 h-11.25 rounded-lg bg-card overflow-hidden shrink-0 sm:block">
                 {items[0]?.thumbnail_url && (
                   <RemoteImage
                     src={items[0].thumbnail_url}
@@ -1217,16 +1219,17 @@ function PlaylistDetail() {
                         className="inline-flex items-center gap-1.5 text-2xs text-accent mr-1"
                       >
                         <span className="w-1.5 h-1.5 rounded-full bg-accent" />
-                        {t("playlists.unsynced")}
+                        <span className="sr-only xl:not-sr-only">{t("playlists.unsynced")}</span>
                       </span>
                     )}
                     <Button
                       size="sm"
                       onClick={() => shown.length && openPlayer(shown[0]!.id)}
                       disabled={!shown.length}
+                      label={t("playlists.playAll")}
                       icon={<Play className="fill-current" />}
                     >
-                      {t("playlists.playAll")}
+                      <span className="hidden sm:inline">{t("playlists.playAll")}</span>
                     </Button>
                     {/* Rename, the pin, YouTube (open / push / revert) and Delete: the list's ONE
                       menu, the same the rail row opens — the header keeps Play all. */}