For COERCE-* only consider objects capable of `cando` method
For COERCE-* only consider objects capable of `cando` method

This would limit us to Routine descendant which is ok for expected to be
a method and let us filter out Nil whose `find_method` returns a
`ForeignCode` mockup.

MasterDuke17/rakudo,MasterDuke17/rakudo,labster/rakudo,salortiz/rakudo,labster/rakudo,salortiz/rakudo,tbrowder/rakudo,salortiz/rakudo,tony-o/rakudo,salortiz/rakudo,salortiz/rakudo,tony-o/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tbrowder/rakudo,rakudo/rakudo,labster/rakudo,tbrowder/rakudo,labster/rakudo,labster/rakudo,tony-o/rakudo,MasterDuke17/rakudo,rakudo/rakudo,tbrowder/rakudo,rakudo/rakudo,rakudo/rakudo,salortiz/rakudo,rakudo/rakudo,tony-o/rakudo,MasterDuke17/rakudo,rakudo/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,labster/rakudo,tony-o/rakudo,tony-o/rakudo