fix(db): Fix a sprout/history tree read panic in Zebra 1.4.0, which o… #9

Job	Run time
Generate crates matrix	16s
Check crates matrix	7s
Build tower-batch-control crate	27s
Build tower-fallback crate	21s
Build zebra-chain crate	2m 9s
Build zebra-consensus crate	7m 44s
Build zebra-network crate	2m 6s
Build zebra-node-services crate	1m 48s
Build zebra-rpc crate	7m 42s
Build zebra-scan crate	1m 13s
Build zebra-script crate	1m 32s
Build zebra-state crate	7m 28s
Build zebra-test crate	50s
Build zebra-utils crate	8m 9s
Build zebrad crate	11m 12s
Open or update issues for building crates individually failures	0s
	53m 4s

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