This PR implements phase 1 of:
https://github.com/paritytech/polkadot-sdk/pull/2372#discussion_r1461873933

NOTE: This means that all the current parachains can upgrade their code
to the maximum size for free.

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Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Radha <86818441+DrW3RK@users.noreply.github.com>