ATMPArgs should contain const arguments for validation.
The Workspace should contain state that may change
throughout validation.
This is a backport of core#21062 [3/4]
https://github.com/bitcoin/bitcoin/pull/21062/commits/174cb5330af4b09f3a66974d3bae783ea43b190e
Note: changes related to RBF are not applicable
Depends on D11779