fix(player-bar): use data-tooltip on time toggle (not native title)

Native `title` attribute renders an unstyled OS tooltip and bypasses the
TooltipPortal — convention in this codebase is `data-tooltip="…"` so the
hover hint matches every other player-bar control.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/PlayerBar.tsx

@@ -322,7 +322,7 @@ export default function PlayerBar() {
                 setLocalShowRemaining(newVal);
                 useThemeStore.getState().setShowRemainingTime(newVal);
               }}
-              title={localShowRemaining ? t('player.showDuration') : t('player.showRemainingTime')}
+              data-tooltip={localShowRemaining ? t('player.showDuration') : t('player.showRemainingTime')}
             >
               {localShowRemaining ? <RemainingTime duration={duration} /> : formatTime(duration)}
               <ArrowLeftRight size={10} style={{ marginLeft: 4, opacity: 0.6 }} />