backport: merge bitcoin#22380, #25838, #25917, #26059, #26578, #27798, #27676, #27999, #28337, #28422, #28630, #28783, partial bitcoin#24866, #25612 (toolchain backports: part 1)

backport: merge bitcoin#22380, #25838, #25917, #26059, #26578, #27798, #27676, #27999, #28337, #28422, #28630, #28783, partial bitcoin#24866, #25612 (toolchain backports: part 1) #984