Fix potential deadlock in state_key::Entry::drop #65789

Job	Run time
file_change_determinator	12s
rust-doc-tests	5m 7s
rust-unit-tests	0s
rust-consensus-only-smoke-test	0s
rust-consensus-only-unit-test	0s
rust-lints	3m 21s
rust-cargo-deny	1m 47s
rust-smoke-tests	26m 40s
general-lints	1m 43s
rust-targeted-unit-tests	16m 14s
rust-build-cached-packages	1m 56s
rust-cryptohasher-domain-separation-check	0s
rust-check-merge-base	2m 48s
	59m 48s

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