Allow hovering over cached modules #8657

Job	Run time
rustfmt	5s
test-wasm	1m 19s
lint-build	53s
test (stable, x86_64-unknown-linux-gnu)	3m 51s
validate	17s
test (stable, x86_64-unknown-linux-musl)	6m 22s
test (stable, aarch64-unknown-linux-gnu)	2m 18s
test (stable, aarch64-unknown-linux-musl)	2m 36s
test (stable, x86_64-apple-darwin)	7m 13s
test (stable, x86_64-pc-windows-msvc)	6m 29s
test (stable, aarch64-apple-darwin, macos-latest, arm64, cargo, true)	4m 54s
test-projects	1m 45s
	38m 2s

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