KT-11018 Ctrl + Mouse Hover shows a var as val

#KT-11018 Fixed

idea/testData/refactoring/extractFunction/initializers/classes/classInitializer.kt

@@ -1,5 +1,5 @@
 // PARAM_TYPES: kotlin.Int
-// PARAM_DESCRIPTOR: value-parameter val b: kotlin.Int defined in A.<init>
+// PARAM_DESCRIPTOR: value-parameter b: kotlin.Int defined in A.<init>
 class A(val a: Int, b: Int) {
     init {
         println(<selection>a + b</selection> - 1)