Suppresses KMP "actual" and "expect" class warnings

[naoele]

Issue

• close #1008

Overview (Required)

• Suppresses warnings about "actual" and "expect" class declarations

Links

• https://kotlinlang.org/docs/multiplatform-expect-actual.html#expected-and-actual-classes

Screenshot

Before	After

[takahirom]

I didn't know this is experimental. Thanks!