Mark required call with 'caret' in abstract resolved calls test

compiler/testData/resolvedCalls/invoke/implicitReceiverForInvoke.kt

@@ -1,12 +1,10 @@
-// !CALL: invoke
-
 class Foo() {
     fun Int.invoke() {}
 }
 
 fun bar(f: Foo, i: Int) {
     with (i) {
-        f()
+        f<caret>()
     }
 }