fix(settings): add section fallback

Added a simple message as a fallback that is used if no section is
selected.

src/features/settings/views/SettingsView.vue

@@ -88,9 +88,12 @@ onMounted(async () => {
                 <div v-if="!settingsLoaded">
                     {{ t('loading') }}
                 </div>
-                <div v-else>
+                <div v-else-if="activeSection">
                     <SettingsPage :setting="activeSectionContent" :path="activeSection" />
                 </div>
+                <div v-else>
+                    {{ t('settings.noSectionSelected') }}
+                </div>
             </div>
         </LeftSidebarLayout>
     </div>