Use `Layout` in place of `DeviceLocalLayout`
JAX is undergoing a rename of the contents of jax.experimental.layouts in preparation for its graduation from experimental:
* "Formats" are replacing "layouts", and specifically `Layout -> Format`
* "Layouts" are replacing "device local layouts", and specifically `DeviceLocalLayout -> Layout`
This is an incremental update carrying out #2.
PiperOrigin-RevId: 774430463