Fix false warning about useless cast in property and property accessor

Note that there are some other problems, for example:
`val a = if (true) 1 as Number else 2`, here we'll get useless cast

 #KT-9551 Fixed
 #KT-9645 Fixed

compiler/frontend/src/org/jetbrains/kotlin/types/expressions/BasicExpressionTypingVisitor.java

@@ -445,6 +445,10 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
         if (parent instanceof KtBinaryExpression || parent instanceof KtUnaryExpression) {
             return true;
         }
+        // Previously we've checked that there is no expected type, therefore cast in property has an effect on inference
+        if (parent instanceof KtProperty || parent instanceof KtPropertyAccessor) {
+            return true;
+        }
         return false;
     }