Merge pull request #2552 from jellyfin/add-unknown-command

add 'unknown' as an input command

src/scripts/inputManager.js

@@ -235,6 +235,9 @@ import { appHost } from '../components/apphost';
             },
             'repeatone': () => {
                 playbackManager.setRepeatMode('RepeatOne');
+            },
+            'unknown': () => {
+                // This is the command given by 'notify', it's a no-op
             }
         })[command];