refactor: optimize success message logic in AdmitPendingMembersDialog

- Simplify success message generation using ternary operators
- Remove visibilitySetCount due to its implied nature
- Handle case when contactAddedCount is 0 by omitting contact-related text
- Use more compact logic that only applies ternaries to variable parts
- Maintain proper pluralization for both admitted members and contacts

The message now shows:
- "n member/s admitted." when no contacts added
- "n member/s admitted and added as contact/s." when counts equal
- "n member/s admitted, n added as contact/s." when counts differ

src/components/AdmitPendingMembersDialog.vue

@@ -218,7 +218,6 @@ export default class AdmitPendingMembersDialog extends Vue {
 
       let admittedCount = 0;
       let contactAddedCount = 0;
-      let visibilitySetCount = 0;
 
       for (const member of selectedMembers) {
         try {
@@ -234,7 +233,6 @@ export default class AdmitPendingMembersDialog extends Vue {
 
           // Set their seesMe to true
           await this.updateContactVisibility(member.did, true);
-          visibilitySetCount++;
         } catch (error) {
           // eslint-disable-next-line no-console
           console.error(`Error processing member ${member.did}:`, error);
@@ -248,7 +246,7 @@ export default class AdmitPendingMembersDialog extends Vue {
           group: "alert",
           type: "success",
           title: "Members Admitted Successfully",
-          text: `Admitted ${admittedCount} member${admittedCount === 1 ? "" : "s"}, added ${contactAddedCount} as contact${contactAddedCount === 1 ? "" : "s"}, and set visibility for ${visibilitySetCount} member${visibilitySetCount === 1 ? "" : "s"}.`,
+          text: `${admittedCount} member${admittedCount === 1 ? "" : "s"} admitted${contactAddedCount === 0 ? "" : admittedCount === contactAddedCount ? " and" : `, ${contactAddedCount}`}${contactAddedCount === 0 ? "" : ` added as contact${contactAddedCount === 1 ? "" : "s"}`}.`,
         },
         10000,
       );