[IR] Support MFVC properties without backing fields

Signed-off-by: Evgeniy.Zhelenskiy <Evgeniy.Zhelenskiy@jetbrains.com>

#KT-1179

compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/JvmMultiFieldValueClassLowering.kt

@@ -912,13 +912,7 @@ internal class JvmMultiFieldValueClassLowering(
     override fun visitCall(expression: IrCall): IrExpression {
         val callee = expression.symbol.owner
         val property = callee.property
-        if (
-            property != null &&
-            callee.extensionReceiverParameter == null &&
-            callee.contextReceiverParametersCount == 0 &&
-            callee.isGetter &&
-            (expression.type.needsMfvcFlattening() || expression.dispatchReceiver?.type?.needsMfvcFlattening() == true)
-        ) {
+        if (property != null && callee.isGetter && replacements.getMfvcPropertyNode(property) != null) {
             require(callee.valueParameters.isEmpty()) { "Unexpected getter:\n${callee.dump()}" }
             expression.dispatchReceiver = expression.dispatchReceiver?.transform(this, null)
             return context.createJvmIrBuilder(getCurrentScopeSymbol(), expression).irBlock {

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/MemoizedMultiFieldValueClassReplacements.kt

@@ -335,8 +335,9 @@ class MemoizedMultiFieldValueClassReplacements(
         }
     }
 
-    private fun useRootNode(
-        parent: IrClass,
-        property: IrProperty
-    ) = parent.isMultiFieldValueClass && (property.getter?.isStatic ?: property.backingField?.isStatic) == false
+    private fun useRootNode(parent: IrClass, property: IrProperty): Boolean {
+        val getter = property.getter
+        if (getter != null && (getter.contextReceiverParametersCount > 0 || getter.extensionReceiverParameter != null)) return false
+        return parent.isMultiFieldValueClass && (getter?.isStatic ?: property.backingField?.isStatic) == false
+    }
 }