Refactor `vm_lookup_cc` to allow lock-free lookups in `RClass.cc_tbl` #8093

Job	Run time
cargo clippy	48s
cargo test	1m 1s
make (yjit-bindgen, To fix: use patch in logs, --with-gcc=clang-14 --enable-yjit=dev, /usr/lib/ll...	4m 48s
make (yjit-bench, --enable-yjit=dev, --yjit-stats, true)	6m 13s
make (test-bundled-gems, --enable-yjit=dev)	24m 32s
make (check, --enable-yjit=dev, --yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc, -T --yj...	13m 24s
make (check, RUSTC='rustc +1.58.0', 1.58.0)	4m 48s
make (check, --enable-yjit=dev)	5m 9s
YJIT Ubuntu result	3s
	1h 0m 46s

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