[backport#15288] Remove use of GetTransactionAncestry in wallet code

Summary:
cd32160af0528cc746968ee0eadf4f63c98665f2 This commit does not change behavior. (Russell Yanofsky)

Depends on D5820

This is a partial backport of Core PR15288

Test Plan:

cmake .. -DENABLE_WERROR=ON -DCMAKE_BUILD_TYPE=Debug
ninja check check-functional

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D5826