bug: MSSQL create_table with pandas dataframe leaves a lot ibis_panda table around

[ruiyang2015]

What happened?

using following code:

c = ibis.mssql.connect(...)
df = pd.DataFrame.from_dict({'val': [1, 2, 3]})
c.create_table('t', df)
c.list_tables()

after the table creation, in addition to the table t being created, there is also a table with ibis_pandas_memtable_s2xlcq5anjg5tlyy5i5y4zan7q and not get cleaned up

What version of ibis are you using?

9.0.0

What backend(s) are you using, if any?

MSSQL

Relevant log output

no error logs, just check the tables after create_table calls

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