fix chunk fetching network compatibility zombienet test #16820

Job	Run time
check-dependency-rules	9s
check-fail-ci	10s
check-markdown	15s
check-readme	3m 23s
check-workspace	17s
preflight / preflight	45s
preflight / ci-versions	59s
check-rust-feature-propagation	1m 56s
test-rust-features	1m 56s
check-toml-format	1m 0s
fmt	1m 8s
check-umbrella	2m 25s
All quick checks passed	1s
	14m 24s

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