Add Parameter Fix: Support smart casts

#KT-24207 Fixed

idea/testData/quickfix/changeSignature/addFunctionParameterWithSmartCast.kt

@@ -0,0 +1,13 @@
+// "Add parameter to function 'fooFun'" "true"
+sealed class Foo {
+    class SubFoo : Foo()
+    class Sub2Foo : Foo()
+}
+
+fun fooFun(): Int = 1
+
+val subFoo: Foo = Foo.SubFoo()
+val bar = when(subFoo){
+    is Foo.SubFoo -> fooFun(<caret>subFoo)
+    else -> 0
+}