ALL-4636 Resolution for connection leaks (#12144)

Co-authored-by: openhands <openhands@all-hands.dev>

openhands/server/routes/manage_conversations.py

@@ -510,6 +510,10 @@ async def delete_conversation(
     if v1_result is not None:
         return v1_result
 
+    # Close connections
+    await db_session.close()
+    await httpx_client.aclose()
+
     # V0 conversation logic
     return await _delete_v0_conversation(conversation_id, user_id)
 
@@ -551,11 +555,8 @@ async def _try_delete_v1_conversation(
                     httpx_client,
                 )
             )
-    except (ValueError, TypeError):
-        # Not a valid UUID, continue with V0 logic
-        pass
     except Exception:
-        # Some other error, continue with V0 logic
+        # Continue with V0 logic
         pass
 
     return result