Allowed call value with extension function type as simple function type.

compiler/testData/diagnostics/tests/regressions/kt5362.kt

@@ -24,7 +24,7 @@ public class Manager {
 
     class Task(val callback: Manager.() -> Unit) : Runnable {
         override public fun run() {
-            <!MISSING_RECEIVER!>callback<!>() // Manager is not accessible here, but no error is shown
+            callback(<!NO_VALUE_FOR_PARAMETER!>)<!> // Manager is not accessible here, but no error is shown
         }
     }
 }