Prevent infinite recursion in CheckResets (bp #1525) (#1527)

* Avoid infinite loops on async-reset self-inits in CheckResets

* Fixes #1516
* Tighten up logic for "casted literal" checking

(cherry picked from commit 1bb38863)

* Add Paul's async-reset self-init case as a test

(cherry picked from commit 74ff30cf

)

Co-authored-by: Albert Magyar <albert.magyar@gmail.com>