[STDLIB] 1/2 Drop AllowDifferentMembersInActual from stdlib

^KT-62656 Fixed

I blindly converted all `@AllowDifferentMembersInActual` to suppresses.
But some suppresses in stdlib are redundant. I'm too lazy properly
annotate only the necessary places. All these suppresses will go away
after the bootstrap update anyway

I drop allowDifferentMembersInActual_class and
allowDifferentMembersInActual_typealias tests because their only purpose
was to check that `@AllowDifferentMembersInActual` works as expected

Note: some tests are failing in the compiler because of that. I will fix
them in the next commit

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt

@@ -1,6 +1,3 @@
-public abstract interface annotation class kotlin/AllowDifferentMembersInActual : java/lang/annotation/Annotation {
-}
-
 public abstract interface annotation class kotlin/BuilderInference : java/lang/annotation/Annotation {
 }