fixed test_laplacianErrorCell and laplace-cell bug

Author: Alexander Ororbia

ngclearn/components/neurons/graded/laplacianErrorCell.py

@@ -99,6 +99,7 @@ def advance_state(self, dt): ## compute Laplacian error cell output
         self.L.set(jnp.squeeze(L))
         self.mask.set(mask)
 
+    @compilable
     def reset(self): ## reset core components/statistics
         restVals = jnp.zeros((self.batch_size, self.n_units))
         dshift = restVals