Add default types_mapper to from_pyarrow_table_dispatch for pandas

[rjzamora]

dask.dataframe.dispatch.from_pyarrow_table_dispatch is currently used by distributed's p2p-shuffle algorithm. However, in order to ensure that pyarrow string types are not lost during the pandas-arrow-pandas round trip, a special types_mapper argument is passed through to pa.Table.to_pandas. The types_mapper argument is not backend agnostic, as such an argument must be ignored by the cudf implementation of from_pyarrow_table_dispatch.

This PR moves the types_mapper logic into the pandas implementation of from_pyarrow_table_dispatch.

[rjzamora]

cc @hendrikmakait - Note that my primary goal here is to allow us to remove the types_mapper argument from this line of distributed, because it currently results in warnings like this for the cudf backend:

UserWarning: Ignoring the following arguments to `from_pyarrow_table_dispatch`: ['types_mapper']

[hendrikmakait]

Thanks, @rjzamora!