[JAX] Adding square as a fuser target

PiperOrigin-RevId: 831459678

Author: Marcello Maggioni

jax/_src/pallas/fuser/block_spec.py

@@ -2225,6 +2225,7 @@ def register_eltwise_rule(prim: core.Primitive):
 register_eltwise_rule(lax.cos_p)
 register_eltwise_rule(lax.sqrt_p)
 register_eltwise_rule(lax.rsqrt_p)
+register_eltwise_rule(lax.square_p)
 register_eltwise_rule(lax.log_p)
 register_eltwise_rule(lax.integer_pow_p)