[ruby/prism] Implement bracket/braces events for ripper

Drops the check against order. Very often ripper emits events in a order
that is not easy to mimic. It's only getting worse now that most events are implemented.

Perhaps the test can be brought back at a later time. For now, I used it while making this commit
but adding all these exceptions makes not much sense.
It already was a pretty long list.

ruby/prism@f43299a18b

Author: Earlopain