In `RootConfig::contains`, check against canonicalized version of root path since OS may hand us data that uses that rather than the root as specified by the user.
In `RootConfig::contains`, check against canonicalized version of root
path since OS may hand us data that uses that rather than the root as
specified by the user.

rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer