Fix importing contract crates into other crates for testing #4345

Job	Run time
check-git-rev-deps	6s
build-fuzz	1m 2s
cargo-deny (advisories)	34s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	1m 0s
cargo-deny (bans licenses sources)	36s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	1m 2s
docs	39s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	56s
fmt	5s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	1m 2s
publish-dry-run	0s
readme	1m 0s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	59s
semver-checks	58s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	56s
complete	1s
	10m 56s

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