wallet: Fix segmentation fault in CreateWalletFromFile (MarcoFalke)
test: Print both messages on failure in assert_raises_message (MarcoFalke)
wallet: Fix documentation around WalletParameterInteraction (MarcoFalke)
Pull request description:
Comes with a test to aid review. The test should fail without the fix to bitcoind The following `CreateWalletFromFile` issues are fixed: * `walletFile` refers to freed memory and will thus corrupt the debug.log and/or crash the node if read * `WalletParameterInteraction` was moved to `CreateWalletFromFile` and `WalletInit::ParameterInteraction` without updating the documentation
https://github.com/bitcoin/bitcoin/pull/16796/files
Backport of Core PR16796