Replace hardcoded notification strings with standardized constants

- Replace literal strings with notification constants in ContactsView.vue:
  * "Got an error sending the invite." → NOTIFY_INVITE_ERROR.message
  * "Could not set visibility on the server." → NOTIFY_VISIBILITY_ERROR.message
  * "Unconfirmed Hours" → NOTIFY_UNCONFIRMED_HOURS.title
- Remove unused NOTIFY_REGISTER_PROCESSING import
- Remove unused NOTIFICATION_TIMEOUTS constant in ShareMyContactInfoView.vue
- Fix unused parameter warnings in danger() and warning() methods
- Resolve all notification-related linting errors

src/components/MembersList.vue

@@ -211,7 +211,7 @@ interface DecryptedMember {
 })
 export default class MembersList extends Vue {
   $notify!: (notification: NotificationIface, timeout?: number) => void;
-  
+
   notify!: ReturnType<typeof createNotifyHelpers>;
   libsUtil = libsUtil;
 
@@ -231,7 +231,7 @@ export default class MembersList extends Vue {
 
   async created() {
     this.notify = createNotifyHelpers(this.$notify);
-    
+
     const settings = await this.$accountSettings();
     this.activeDid = settings.activeDid || "";
     this.apiServer = settings.apiServer || "";
@@ -505,10 +505,7 @@ export default class MembersList extends Vue {
       if (err instanceof Error && err.message?.indexOf("already exists") > -1) {
         message = "This person is already in your contact list.";
       }
-      this.notify.error(
-        message,
-        TIMEOUTS.LONG,
-      );
+      this.notify.error(message, TIMEOUTS.LONG);
     }
   }
 }