Fix potential deadlock in state_key::Entry::drop #65648

Job	Run time
file_change_determinator	11s
rust-doc-tests	4m 30s
rust-unit-tests	0s
rust-consensus-only-unit-test	0s
rust-consensus-only-smoke-test	0s
rust-lints	3m 19s
rust-cargo-deny	1m 46s
rust-smoke-tests	27m 49s
general-lints	1m 41s
rust-check-merge-base	2m 0s
rust-cryptohasher-domain-separation-check	0s
rust-targeted-unit-tests	17m 32s
rust-build-cached-packages	2m 5s
	1h 0m 53s

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