KT-11594 "Add non-null asserted (!!) call" applied to unsafe cast to nullable type causes AE at KtPsiFactory.createExpression()

#KT-11594 Fixed

idea/testData/quickfix/expressions/kt11594.kt

@@ -0,0 +1,7 @@
+// "Add non-null asserted (!!) call" "true"
+
+fun callMe(p: String) {}
+
+fun callIt(p: Any) {
+    callMe(<caret>p as String?)
+}

idea/testData/quickfix/expressions/kt11594.kt.after

@@ -0,0 +1,7 @@
+// "Add non-null asserted (!!) call" "true"
+
+fun callMe(p: String) {}
+
+fun callIt(p: Any) {
+    callMe(<caret>(p as String?)!!)
+}