Hide attendee number when only one person is listed

Conditionally render the attendee index span element only when the number of items in the list exceeds one.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 77cfe984-2c65-4152-bb7a-0df28274fe66
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 6a614115-a39d-4b50-ac9b-9d97294fc18d
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Replit-Helium-Checkpoint-Created: true

artifacts/tx-os/src/pages/executive-meetings.tsx

@@ -3307,12 +3307,14 @@ function AttendeeFlow({
             (editable ? " min-w-[3rem]" : "")
           }
         >
-          <span
-            data-testid={`em-attendee-index-${i}`}
-            className="text-gray-500 me-1"
-          >
-            {displayIdx + 1}-
-          </span>
+          {items.length > 1 && (
+            <span
+              data-testid={`em-attendee-index-${i}`}
+              className="text-gray-500 me-1"
+            >
+              {displayIdx + 1}-
+            </span>
+          )}
           {editable ? (
             <EditableCell
               value={a.name}