fix(framework:skip) Fix the SqliteState.get_run method (#4222)

src/py/flwr/server/superlink/state/sqlite_state.py

@@ -782,18 +782,18 @@ def get_run(self, run_id: int) -> Optional[Run]:
         # Convert the uint64 value to sint64 for SQLite
         sint64_run_id = convert_uint64_to_sint64(run_id)
         query = "SELECT * FROM run WHERE run_id = ?;"
-        try:
-            row = self.query(query, (sint64_run_id,))[0]
+        rows = self.query(query, (sint64_run_id,))
+        if rows:
+            row = rows[0]
             return Run(
                 run_id=convert_sint64_to_uint64(row["run_id"]),
                 fab_id=row["fab_id"],
                 fab_version=row["fab_version"],
                 fab_hash=row["fab_hash"],
                 override_config=json.loads(row["override_config"]),
             )
-        except sqlite3.IntegrityError:
-            log(ERROR, "`run_id` does not exist.")
-            return None
+        log(ERROR, "`run_id` does not exist.")
+        return None
 
     def acknowledge_ping(self, node_id: int, ping_interval: float) -> bool:
         """Acknowledge a ping received from a node, serving as a heartbeat."""