da9caa1ced Replace fs::absolute calls with AbsPathJoin calls (Kiminuo)
66576c4fd5 test: Clear forced -walletdir setting after wallet init_tests (Kiminuo)
Pull request description:
This adds better test coverage and will make it easier in #20744 to remove our dependency on the two-argument boost::filesystem::absolute() function which does not have a direct equivalent in C++17.
This PR doesn't change behavior aside from adding an assert and fixing a test bug.
ACKs for top commit:
jonatack:
Code review ACK da9caa1ced only doxygen improvements since my last review per `git diff d867d7a da9caa1`
MarcoFalke:
review ACK da9caa1ced📯
ryanofsky:
Code review ACK da9caa1ced. Just comment and test tweaks since previous review.
Tree-SHA512: c940ee60f3ba374d4927cf34cf12d27c4c735c94af591fbc0ca408c641b30f8f8fbcfe521d66bfbddf9877a1fc8cd99bd8a47ebcd2fa59789de6bd87a7b9cf4d