Do not force overridden descriptors computation

Currently 'overriddenDescriptors' of substituted function is lazy
and in most cases it's unnecessary to compute it
(it's enough to use the same field from 'original')

compiler/frontend.java/src/org/jetbrains/kotlin/load/java/sam/SamAdapterOverridabilityCondition.java

@@ -117,7 +117,7 @@ public class SamAdapterOverridabilityCondition implements ExternalOverridability
             return new SamAdapterInfo(samAdapter, ownerType);
         }
 
-        for (CallableMemberDescriptor overridden : samAdapter.getOverriddenDescriptors()) {
+        for (CallableMemberDescriptor overridden : samAdapter.getOriginal().getOverriddenDescriptors()) {
             ClassDescriptor containingClass = (ClassDescriptor) overridden.getContainingDeclaration();
 
             for (KotlinType immediateSupertype : TypeUtils.getImmediateSupertypes(ownerType)) {