fix(playback): keep now-playing bar actions inside the viewport

The nowrap title made the header grid track grow to min-content and
pushed Copy/Close out of the page; min-width: 0 on the header/title row
lets the title truncate instead.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

libs/ui/playback/src/lib/portal-inline-player/portal-inline-player.component.scss

@@ -22,6 +22,9 @@
 .player-shell__header {
     display: grid;
     gap: 8px;
+    // Allow the nowrap title to shrink instead of widening the grid track
+    // and pushing the actions out of the viewport.
+    min-width: 0;
 }
 
 .player-shell__eyebrow {
@@ -37,6 +40,7 @@
     gap: 12px;
     align-items: center;
     justify-content: space-between;
+    min-width: 0;
 }
 
 .player-shell__back {
@@ -44,6 +48,7 @@
 }
 
 .player-shell__heading {
+    flex: 1;
     min-width: 0;
 }