Regression: Can no longer use `FORMAT PARQUET` in COPY command

[alamb]

Describe the bug

#9604 from @metesynnada rationalized the COPY syntax to match CREATE EXTERNAL TABLE syntax. For example

- COPY (SELECT * FROM 'hits.parquet' LIMIT 10) TO 'clickbench_hits_10.parquet' (FORMAT PARQUET);
+ COPY (SELECT * FROM 'hits.parquet' LIMIT 10) TO 'clickbench_hits_10.parquet' STORED AS PARQUET;

However, this also means the syntax is no longer compatible with duckdb

To Reproduce

❯ COPY (select * from (values (1))) to '/tmp/foo.parquet' OPTIONS (format parquet);
Invalid or Unsupported Configuration: could not find config namespace for key "format"```

Expected behavior

I would like to support the former syntax as well as the new one

So both

❯ COPY (select * from (values (1))) to '/tmp/foo.parquet' OPTIONS (format parquet);
Invalid or Unsupported Configuration: could not find config namespace for key "format"```

And 

```sql
❯ COPY (select * from (values (1))) to '/tmp/foo.parquet' STORED AS PARQUET;
+-------+
| count |
+-------+
| 1     |
+-------+

would work

Additional context

No response

[tinfoil-knight]

take

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Waiting for #9723 to be merged to start working on this.