Fix duplicate bot versioning in false neg:s reporting (#50479)

The case of false negatives (“Missed opportunities”) was not considered
when the bot versioning was added. Now we're also automatically
attributing the false negatives to the bot version that made them.

Release Notes:

- N/A

script/github-track-duplicate-bot-effectiveness.py

@@ -92,6 +92,7 @@ def fetch_issue(issue_number):
         "node_id": data["node_id"],
         "author": (data.get("user") or {}).get("login", ""),
         "type_name": (data.get("type") or {}).get("name"),
+        "created_at": data.get("created_at", ""),
     }
 
 
@@ -419,7 +420,8 @@ def classify_as_missed_opportunity(issue):
     """Issue closed as duplicate but the bot never commented."""
     print("  -> Missed opportunity")
     add_or_update_project_item(
-        issue["node_id"], outcome="Missed opportunity", closed_as="duplicate", status="Auto-classified")
+        issue["node_id"], outcome="Missed opportunity", closed_as="duplicate", status="Auto-classified",
+        bot_comment_time=issue["created_at"])
 
 
 def classify_open():