execute “show full tables from schema like table_name” slowly
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Description
## Bug Report TiDB 8.5.3
execute “show full tables from schema like table_name” ，It takes 0.46 s for TiDB to return，MySQL is 0.01s;The entire database contains 3000 tables, and initialization takes a long time，MySQL only takes a few minutes；
After executing this statement, the expected result is consistent with MySQL；
set @@global.tidb_schema_cache_size=0
question：
Doesn't TiDB cache metadata? When global.tidb_schema_cache_size is not 0, will the returned results meet expectations
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