backport: merge bitcoin#19940, #19498, #19339, #19753, #20581, #20834, #21062, #21783, #21121, #22084, partial bitcoin#19668, #20833 (mempool backports)

backport: merge bitcoin#19940, #19498, #19339, #19753, #20581, #20834, #21062, #21783, #21121, #22084, partial bitcoin#19668, #20833 (mempool backports) #6086