Fix benchmark CI misattribution & flake

Co-authored-by: trevor-signal <131492920+trevor-signal@users.noreply.github.com>

.github/workflows/benchmark.yml

@@ -52,7 +52,7 @@ jobs:
             contactCount: 500
             discardCount: 2
           - metric: convoOpen
-            script: ts/test-mock/benchmarks/group_send_bench.js
+            script: ts/test-mock/benchmarks/convo_open_bench.js
             runCount: 100
           - metric: callHistorySearch
             script: ts/test-mock/benchmarks/call_history_search_bench.js

ts/test-mock/benchmarks/group_send_bench.ts

@@ -140,12 +140,12 @@ Bootstrap.benchmark(async (bootstrap: Bootstrap): Promise<void> => {
   {
     const leftPane = window.locator('#LeftPane');
 
-    // Left pane should show either the message preview or
-    // "You were added to the group".
+    // Wait for group state to be fetched
     await leftPane
       .locator(
         `.module-conversation-list__item--contact-or-conversation[data-testid="${group.id}"]`
       )
+      .getByText(GROUP_NAME)
       .waitFor();
   }