Proto/Michelson: move proof arguments

Context

Preparatory tidying up for !4502 (merged)

MR based on !4133 (merged)

Manually testing the MR

🐫

Checklist

• [ ] Document the interface of any function added or modified (see the coding guidelines)
• [ ] Document any change to the user interface, including configuration parameters (see node configuration)
• [ ] Provide automatic testing (see the testing guide).
• [ ] For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR