test(ui): give the dialog service spec the now-required confirm labels

ConfirmDialogData.confirmLabel became required, and the spec still built
confirmations without one. Jest only transpiles, so the suite stayed green,
but the "Typecheck Jest spec programs" CI step rejected it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/ui/components/src/lib/confirm-dialog/dialog.service.spec.ts

@@ -33,6 +33,7 @@ describe('DialogService', () => {
         service.openConfirmDialog({
             title: 'Remove',
             message: 'Confirm removal?',
+            confirmLabel: 'Remove playlist',
             onConfirm: jest.fn(),
         });
 
@@ -57,6 +58,7 @@ describe('DialogService', () => {
         service.openConfirmDialog({
             title: 'Refresh Xtream Playlist',
             message: 'Confirm refresh?',
+            confirmLabel: 'Refresh playlist',
             width: '400px',
             onConfirm: jest.fn(),
         });
@@ -78,6 +80,7 @@ describe('DialogService', () => {
         service.openConfirmDialog({
             title: 'Remove',
             message: 'Confirm removal?',
+            confirmLabel: 'Remove playlist',
             onConfirm,
         });
 
@@ -89,6 +92,7 @@ describe('DialogService', () => {
         service.openConfirmDialog({
             title: 'Recovery',
             message: 'Path',
+            confirmLabel: 'Copy path',
             keepOpenOnConfirm: true,
             onConfirm,
         });