refactor: move display text logic to BulkMembersDialog component

- Replace individual text props with single isOrganizer boolean prop
- Add computed properties for title, description, buttonText, and emptyStateText
- Simplify parent component interface by removing text prop passing
- Update quote style from single to double quotes for consistency
- Improve component encapsulation and maintainability

src/components/MembersList.vue

@@ -203,18 +203,7 @@
       :active-did="activeDid"
       :api-server="apiServer"
       :dialog-type="isOrganizer ? 'admit' : 'visibility'"
-      :title="isOrganizer ? 'Admit Pending Members' : 'Add Members to Contacts'"
-      :description="
-        isOrganizer
-          ? 'Would you like to admit these members to the meeting and add them to your contacts?'
-          : 'Would you like to add these members to your contacts?'
-      "
-      :button-text="isOrganizer ? 'Admit + Add to Contacts' : 'Add to Contacts'"
-      :empty-state-text="
-        isOrganizer
-          ? 'No pending members to admit'
-          : 'No members are not in your contacts'
-      "
+      :is-organizer="isOrganizer"
       @close="closeBulkMembersDialogCallback"
     />
   </div>