bug: implicit overwrite in with options

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Describe the bug

given the sql

create materialized view mv1 with (streaming_rate_limit = 1000, streaming_rate_limit = 2000) as select * from t1;

the WithOption in HandlerArgs actually gets the latter one without warning

2023-11-16T20:34:34.97059+08:00  INFO process_query_msg_one_stmt{session_id=0 stmt=CREATE MATERIALIZED VIEW mv1 WITH (streaming_rate_limit = 1000, streaming_rate_limit = 2000) AS SELECT * FROM t1}: risingwave_frontend::optimizer::optimizer_context: get with options option=WithOptions { inner: {"streaming_rate_limit": "2000"} }

Error message/log

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To Reproduce

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Expected behavior

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How did you deploy RisingWave?

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The version of RisingWave

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Additional context

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