I get the frustration 
I hope this will be gone in the future!
I can not comment on this topic 
It was actually backported to 1.7.0: Backport 4229 Into v1.7.0 by joepetrowski · Pull Request #4288 · paritytech/polkadot-sdk · GitHub
However, it was only backported to the crates release branch (another thing that should not exist with the new release process!). I assume you used directly the release-polkadot-v1.7.0 branch? I will push the backport there, so you don’t require your manual backport.