[backport#17261 11/13] Refactor: Copy CWallet signals and print function to LegacyScriptPubKeyMan

Summary:
This commit does not change behavior.

https://github.com/bitcoin/bitcoin/pull/17261/commits/e2f02aa59e3402048269362ff692d49a6df35cfd

Depends on D7859

Partial backport of Core PR17261

Test Plan:

ninja all check check-functional

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D7860