contracts: Remove weight pre charging (#8976)

* Remove pre-charging for code size

* Remove pre charging when reading values of fixed size

* Add new versions of API functions that leave out parameters

* Update CHANGELOG.md

* Apply suggestions from code review

Co-authored-by: Alexander Popiak <[email protected]>

* Add v1 for seal_set_rent_allowance

* Remove unneeded trait bound

Co-authored-by: Guillaume Thiolliere <[email protected]>

Co-authored-by: Alexander Popiak <[email protected]>
Co-authored-by: Guillaume Thiolliere <[email protected]>