ZIR-307: Fix host read #621

Job	Run time
check-generated-zirgen (Linux)	2m 27s
check-generated-zirgen (Linux)	2m 27s
check-generated-zirgen (Linux)	2m 27s
bazel (Linux)	1m 20s
bazel (Linux)	1m 12s
bazel (Linux)	1m 2s
check	28s
check	28s
check	28s
bazel (macOS)	7s
bazel (macOS)	7s
bazel (macOS)	35s
doc	1m 25s
doc	1m 25s
doc	1m 25s
test (Linux, X64, default, cpu)	1m 30s
test (Linux, X64, default, cpu)	1m 30s
test (Linux, X64, default, cpu)	1m 30s
test (Linux, X64, cuda, nvidia_rtx_a5000)	1m 35s
test (Linux, X64, cuda, nvidia_rtx_a5000)	1m 35s
test (Linux, X64, cuda, nvidia_rtx_a5000)	1m 35s
test (macOS, ARM64, default, apple_m2_pro)	33s
test (macOS, ARM64, default, apple_m2_pro)	33s
test (macOS, ARM64, default, apple_m2_pro)	33s
main-status-check	3s
main-status-check	3s
main-status-check	4s
	28m 27s

Provide feedback