Do not pass chain params to CheckForStaleTipAndEvictPeers twice

Summary:
PeerManager already keeps a reference to the chain params as a member
variable. No need to pass it in once again as a function parameter.

This is a backport of core#19914

Test Plan: ninja all check-all

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Subscribers: deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D10195