Fix response data slice too small (#6248) #20278

Job	Run time
filter-changes	4s
quicktests	1m 31s
lint	2m 17s
unittests (ubuntu-22.04)	8m 39s
build (ubuntu-22.04)	47s
unittests (ubuntu-latest-arm-8-cores)	8m 30s
build (ubuntu-latest-arm-8-cores)	3m 20s
unittests (self-hosted, macOS, ARM64, go-spacemesh)	4m 46s
build (macos-13)	2m 48s
unittests (windows-2022)	15m 50s
build (self-hosted, macOS, ARM64, go-spacemesh)	23s
build (windows-2022)	4m 8s
ci-status	4s
	53m 7s

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