Merge #11395: Qt: Enable searching by transaction id

Summary:
eac2abca0 Qt: Enable searching by transaction id (Luke Dashjr)
c407c61c5 Qt: Avoid invalidating the search filter, when it doesn't really change (Luke Dashjr)
b1f634242 Qt: Rename confusingly-named "address prefix" to "search string" (Luke Dashjr)

Pull request description:

Tree-SHA512: 1c67037d19689fbaff21d15ed7848ac86188e5de34728312e1f9758dada759cab50d913a5bc09e413ecaa3e07557cf253809b95b5637ff79f2e3cf24d86dd3ed

Backport of Core PR11395
https://github.com/bitcoin/bitcoin/pull/11395/

Depends on D3832

Test Plan:

make check
./bitcoin-qt -> transactions -> enter transaction id to filter by

Reviewers: deadalnix, Fabien, jasonbcox, O1 Bitcoin ABC, #bitcoin_abc

Reviewed By: Fabien, O1 Bitcoin ABC, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D3833