This PR fixes the bug introduced in https://github.com/bitcoin/bitcoin/pull/19099:
$ src/qt/bitcoin-qt -disablewallet
bitcoin-qt: interfaces/node.cpp:236: auto interfaces::(anonymous namespace)::NodeImpl::walletClient()::(anonymous class)::operator()() const: Assertion `"m_context->wallet_client" && check' failed.
Aborted (core dumped)