optimizer: support `unsigned <-> decimal` for unwrap_cast_in_comparion rule

[liukun4515]

    I found this with the test (which failed when it tried to invoke the arrow cast kernels for decimal <--> unsigned)

Originally posted by @alamb in #4149 (comment)

after the next arrow-rs release including the apache/arrow-rs#3106 commit

[liukun4515]

closed by #4634

[alamb]

🎉