Extraction Engine: Replace receiver occurrences with 'this' when necessary

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

@@ -0,0 +1,11 @@
+// PARAM_TYPES: kotlin.String, Comparable<String>, CharSequence, kotlin.Any
+// PARAM_DESCRIPTOR: public fun kotlin.String.test(): kotlin.Unit defined in root package
+fun String.foo(f: () -> Unit) {
+    f()
+}
+
+fun String.test() {
+    "sss".foo {
+        println(<selection>this@test</selection>)
+    }
+}

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

@@ -0,0 +1,13 @@
+// PARAM_TYPES: kotlin.String, Comparable<String>, CharSequence, kotlin.Any
+// PARAM_DESCRIPTOR: public fun kotlin.String.test(): kotlin.Unit defined in root package
+fun String.foo(f: () -> Unit) {
+    f()
+}
+
+fun String.test() {
+    "sss".foo {
+        println(s())
+    }
+}
+
+private fun String.s() = this