Cannot transform from a non-widened tuple

Tuple operators like `++` break transformations from tuples:

```scala
case class Big(int1: Int, int2: Int, int3: Int, int4: Int, int5: Int, int6: Int, int7: Int, int8: Int)

val one = (1, 2, 3, 4)
val two = (5, 6, 7, 8)
  
val joined = (one ++ two)

joined.to[Big]
```