fix: tweak the issue prompt and fix discussion action (#404)

* fix: tweak the issue propmt

* fix: fix discussion

server/agent/prompts/issue_helper.py

@@ -7,7 +7,7 @@
 # Task
 - Analyze the user’s requirements.
 - Filter out this issue itself and search for issues similar to the issue description.
-- If the found issue_number is the same as this issue_number, it means no similar issues were found, You don’t need to mention the issue again.
+- If the found issue_number is the same as this issue_number: {issue_number}, it means no similar issues were found, You don’t need to mention the issue again. 
 - Propose a code modification:
     - Locate the relevant file.
     - Retrieve its content and generate a *diff* showing the proposed changes.

server/event_handler/discussion.py

@@ -112,7 +112,7 @@ async def handle_discussion_event(self, action: str):
     async def execute(self):
         try:
             action = self.event["action"]
-            if action in ["opened", "reopened"]:
+            if action in ["opened", "created"]:
                 await self.handle_discussion_event(action)
                 return {"success": True}
             else: