feat: hide contact instruction when no non-contact members exist

- Add condition to only show "add to contacts" instruction when there are members who are not already contacts
- Use existing getNonContactMembers() method to check for non-contact members
- Fix line length warning by breaking long comment into multiple lines

src/components/MembersList.vue

@@ -36,7 +36,11 @@
             <font-awesome icon="circle-minus" class="text-rose-500 text-sm" />
             to add/remove them to/from the meeting.
           </li>
-          <li v-if="membersToShow().length > 0">
+          <li
+            v-if="
+              membersToShow().length > 0 && getNonContactMembers().length > 0
+            "
+          >
             Click
             <font-awesome icon="circle-user" class="text-green-600 text-sm" />
             to add them to your contacts.
@@ -189,7 +193,10 @@
       :api-server="apiServer"
       @close="closeMemberSelectionDialogCallback"
     />
-    <!-- This Bulk Visibility component is for non-organizer members to add other members to their contacts and set their visibility -->
+    <!--
+      This Bulk Visibility component is for non-organizer members
+      to add other members to their contacts and set their visibility
+    -->
     <SetBulkVisibilityDialog
       ref="setBulkVisibilityDialog"
       :active-did="activeDid"