[NI] Fix determining type equality in replacing of extension receiver

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ResolvedAtomCompleter.kt

@@ -206,9 +206,8 @@ class ResolvedAtomCompleter(
             val valueType = receiver.value.type.unwrap()
             val newValueType = resultSubstitutor.substituteKeepAnnotations(valueType)
 
-            val newReceiverValue = receiver.value.replaceType(newValueType)
-
-            if (newReceiverValue != receiver.value) {
+            if (valueType !== newValueType) {
+                val newReceiverValue = receiver.value.replaceType(newValueType)
                 functionDescriptor.setExtensionReceiverParameter(
                     ReceiverParameterDescriptorImpl(receiver.containingDeclaration, newReceiverValue, receiver.annotations)
                 )

core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/receivers/ExtensionReceiver.java

@@ -54,9 +54,6 @@ public class ExtensionReceiver extends AbstractReceiverValue implements Implicit
     @NotNull
     @Override
     public ReceiverValue replaceType(@NotNull KotlinType newType) {
-        if (NewKotlinTypeChecker.INSTANCE.equalTypes(receiverType, newType)) {
-            return this;
-        }
         return new ExtensionReceiver(descriptor, newType, getOriginal());
     }