Save intermediates during sharded shuffle (#1372) #5162

Job	Run time
Additional Builds and Concurrency Tests	14m 44s
Slow tests	11m 27s
Release builds and tests	8m 25s
Measure coverage	26m 11s
Basic Checks	19m 43s
miri	3m 34s
sanitize (address)	18m 6s
sanitize (address, multi-threading)	19m 36s
sanitize (leak)	8m 0s
sanitize (leak, multi-threading)	8m 8s
	2h 17m 54s

Provide feedback