Move: Fix processing of implicit extension 'invoke' calls

Also fix bogus "unused import" inspection reported on such calls

 #KT-17496 Fixed

idea/testData/inspections/unusedImport/propertyWithExtensionFunctionType.Dependency.kt

@@ -0,0 +1,7 @@
+package foo
+
+class CrExtended
+
+val funExtension = fun CrExtended.(): Unit {}
+
+// WITH_RUNTIME

idea/testData/inspections/unusedImport/propertyWithExtensionFunctionType.kt

@@ -0,0 +1,10 @@
+package bar
+
+import foo.CrExtended
+import foo.funExtension
+
+fun test() {
+    CrExtended().funExtension()
+}
+
+// WITH_RUNTIME