Add Option to suppress materialized view's stale check in iceberg connector

[ulmako]

As discussed with @raunaqmorarka in the this Slack Thread, materialized views on the iceberg connector save and use the snapshot-ids of the queried tables to check if the data in the storage table is up-to-date. If the data is not up-to-date the storage table is considered stale and the materialized view will query the source tables instead of the storage table.

For setups, where the tables in the source query are updated often or where the materialized view is used to increase the performance by using other partition-specs as the tables in the source query, this behavior is maybe not in the interesst of the creator (like in my case).

It therefore would be nice to have an option or table property to suppress the behavior completely or at least for a given time.