test(legal): add test for the legal notice view

Added tests for the legal notice view (LegalNoticeView.vue).

src/App.vue

@@ -26,7 +26,7 @@ import { useRoute } from 'vue-router';
 const route = useRoute();
 
 const { getColorScheme, updateColorScheme } = useColorScheme();
-const colorScheme = ref('auto');
+const colorScheme = ref(null);
 provide('colorScheme', colorScheme);
 watch(colorScheme, (newValue) => {
     updateColorScheme(newValue);

src/features/settings/composables/useSettings.js

@@ -40,5 +40,15 @@ export const useSettings = function useSettings () {
         );
     };
 
-    return { getSetting };
+    /**
+     * Sets the value of a specific setting.
+     * @param {string[]} key - The setting key.
+     * @param value - The new value for the setting.
+     */
+    const setSetting = function setSetting (key, value) {
+        const settingsStore = useSettingsStore();
+        settingsStore.set(key.join('.'), value);
+    };
+
+    return { getSetting, setSetting };
 };