Never suggest fake overrides as results of expects-matching

See KT-48291 for example.

The rationale behind the change is that in "findExpectForActual" we want
to find a candidate to be a counterpart for the current (actual)
declaration. Fake overrides can not be a sensible counterpart in that
regard (you can't, nor you should, provide actual for expect which is
FAKE_OVERRIDE)

^KT-48291 Fixed

compiler/resolution/src/org/jetbrains/kotlin/resolve/multiplatform/ExpectedActualResolver.kt

@@ -87,7 +87,7 @@ object ExpectedActualResolver {
                 }
 
                 candidates.filter { declaration ->
-                    actual != declaration && declaration.isExpect
+                    actual != declaration && declaration.kind != CallableMemberDescriptor.Kind.FAKE_OVERRIDE && declaration.isExpect
                 }.groupBy { declaration ->
                     // TODO: optimize by caching this per actual-expected class pair, do not create a new substitutor for each actual member
                     val substitutor =