RedundantCastUtil: do not report false-positive in code like Object x = (long)intValue;

GitOrigin-RevId: c290213db44e67f5c8949da0b9dce58a7cb9323a

java/java-tests/testData/inspection/redundantCast/generics/PrimitiveWidening.java

@@ -15,4 +15,7 @@ class A {
     widen((int)c);
   }
   
+  Object test(int x) {
+    return (long) x;
+  }
 }