fa5278a419 qa: Use wallet to retrieve raw transactions (MarcoFalke)
fa2198328e qa: Style-only fixes in touched files (MarcoFalke)
Pull request description:
Instead of asking the coin database and block storage about a transaction, pull it directly from the wallet in wallet related tests.
This refactoring only makes sense in light of #15159.
<sub>This product may contain minor stylistic cleanups
Tree-SHA512: ec34c7150d873da9f19fead3f7e3f758baba5ef10061942384c470a47a6f320690109be9c5160f0c8bc228272a729653d44c78471455337318f657d6c164ba23
Prior to this change, it would mark only the first layer of
child transactions abandoned, due to always following the input hashTx
rather than the current now tx.