feat(settings): default select primary office suite when none is installed

Signed-off-by: James Manuel <moodyjmz@users.noreply.github.com>

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: moodyjmz

apps/settings/src/components/AppList/OfficeSuiteSwitcher.vue

@@ -98,7 +98,7 @@ export default {
 				}
 			}
 
-			return null
+			return OFFICE_SUITES[0].id
 		},
 
 		selectSuite(suiteId) {