Prisma

Is there a reason why the `where` key is always mandatory on mutating many link types? I moved from 1.19 to 1.24, (it didn't work well before), and now I *have to* mention a `where`. What if I want all links to get updated?

Like in:
```
prisma.updateLoan({
  where: { id: args.id },
  data: {
    items: {
      // Here update and updateMany require a where
    }
  }
})
```
So it's either I call `updateLoan` and I have to mention a `where` on `loan.items` *or* I call `updateManyLoans` and I can't even call `items` inside `data`:thinking_face:

That seems like a bug. Would you mind creating an issue for this?

Maybe to avoid all links getting deleted / updated? I have seen many db engines that don't allow a DELELTE * FROM table; Or they require setting a flag before you can do it.