Also clean up forward other forward declarations in interfaces/wallet.h with !sort
Original motivation for this change was to fix a circular dependencies lint
error: "interfaces/chain.h -> interfaces/wallet.h -> psbt -> node/transaction
-> node/context -> interfaces/chain.h" from an earlier commit in this PR adding
a "interfaces/chain.h -> interfaces/wallet.h" include. Now, the wallet include
is no longer added, but it is still good to clean up the psbt include for
efficiency, and to sort the forward declarations.
Depends on D6995
Backport of Core PR17999 part [2/2] : https://github.com/bitcoin/bitcoin/pull/17999/commits/3ce16ad2f91d1e2edc7e7bdc5a19f72aa8c3e739