Resolve Endpoints PostGres dup element issue

[merlinf31]

ycopg - WARNING - error ignored terminating <psycopg.Pipeline [IDLE, pipeline=ON] (host=aws-1-us-east-1.pooler.supabase.com port=6543 user=postgres.gkxlrxiiqliyxbuaapiu database=postgres) at 0x79d9d2f737a0>: pipeline aborted
Exception in thread EventRecorder-Writer-cli_benchmark_be1197cb:
Traceback (most recent call last):
File "/usr/lib/python3.12/threading.py", line 1073, in _bootstrap_inner
self.run()
File "/usr/lib/python3.12/threading.py", line 1010, in run
self._target(*self._args, **self._kwargs)
File "/home/merlin/mlcommons/src/endpoints/src/inference_endpoint/metrics/recorder.py", line 420, in _writer_loop
commit_buffer()
File "/home/merlin/mlcommons/src/endpoints/src/inference_endpoint/metrics/recorder.py", line 382, in commit_buffer
cur.executemany(insert_query, event_buffer)
File "/home/merlin/mlcommons/src/endpoints/venv/lib/python3.12/site-packages/psycopg/cursor.py", line 148, in executemany
raise ex.with_traceback(None)
psycopg.errors.DuplicatePreparedStatement: prepared statement "_pg3_0" already exists