1. the `primitive == object?.something` fusion should not apply to
`primitive.equals(object?.something)` because it can't;
2. coercions to Int are there for a reason - don't remove them;
3. better optimize `primitive == object?.something` -- the result
should be subject to if-null fusion, so it needs to have a specific
pattern that resembles safe calls.
#KT-47597 Fixed
pyos