[docs] Add release notes for removal of REJECT codes in logging

Summary:
Add some release notes related to the user-facing changes introduced by PR17004.
The original 5th commit of the PR also added release notes related to changes in other PR, which were backported for our previous release (0.22.5). We only mention the changes to logging.

This concludes the backport of Core PR17004 [5/5]
Inspired by commit https://github.com/bitcoin/bitcoin/pull/17004/commits/9075d13153ce06cd59a45644831ecc43126e1e82
Depends on D8184

Test Plan: Proof-reading

Reviewers: O1 Bitcoin ABC, #bitcoin_abc, jasonbcox

Reviewed By: O1 Bitcoin ABC, #bitcoin_abc, jasonbcox

Differential Revision: https://reviews.bitcoinabc.org/D8185