The `range` module has a hard-coded path to `cal` module, but it is moving in 6.0

[scotttrinh]

See https://github.com/edgedb/edgedb-js/blob/227f12553c67dbcf1cc89a7f34c0142e7360ae6a/packages/generate/src/syntax/range.ts#L21

In 6.0, all of our modules have moved into std, so code generation is putting the cal module into std/cal.ts. We need to make this import dynamic somehow, or at least re-export the necessary bits into the top-level export still so these exports are available still.