Extraction Engine: Support references to synthetic properties

idea/testData/refactoring/extractFunction/parameters/extractThis/javaSyntheticProperty.java

@@ -0,0 +1,6 @@
+import org.jetbrains.annotations.NotNull;
+
+interface Named {
+    @NotNull
+    String getName();
+}

idea/testData/refactoring/extractFunction/parameters/extractThis/javaSyntheticProperty.kt

@@ -0,0 +1,6 @@
+// WITH_RUNTIME
+// PARAM_DESCRIPTOR: private final fun Named.foo(): [org.jetbrains.annotations.NotNull] String defined in Test
+// PARAM_TYPES: Named
+public class Test {
+    private fun Named.foo() = <selection>name</selection>
+}

idea/testData/refactoring/extractFunction/parameters/extractThis/javaSyntheticProperty.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+// PARAM_DESCRIPTOR: private final fun Named.foo(): [org.jetbrains.annotations.NotNull] String defined in Test
+// PARAM_TYPES: Named
+public class Test {
+    private fun Named.foo() = s()
+
+    private fun Named.s() = name
+}