backport: merge bitcoin#20769, #19499, #23575, #23695, #21160, #24692, partial bitcoin#20196, #25176, merge bitcoin-core/gui#526 (networking backports: part 4)

backport: merge bitcoin#20769, #19499, #23575, #23695, #21160, #24692, partial bitcoin#20196, #25176, merge bitcoin-core/gui#526 (networking backports: part 4) #3915