bug(catalog): pg_stat_user_tables is missing for metabase support

[KeXiangWang]

Describe the bug

As title.

Error message/log

Catalog error: table or source not found: pg_stat_user_tables

To Reproduce

No response

Expected behavior

No response

How did you deploy RisingWave?

No response

The version of RisingWave

No response

Additional context

No response

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[hzxa21]

The RW - metabase integration used to work but after metabase/metabase#39494 (v50.0), metabase starts to rely on pg_stat_user_tables while RW doesn't support it.

[hzxa21]

https://github.com/metabase/metabase/pull/50102/files#diff-122d8f1486c5b97fd092fb98e7419b767c12d378bc6e668c16b1041cd965f9cb This changes in metabase causes RW MV columns cannot be reflected as well.