nanshe/util/xnumpy.py: In `pair_dot_product_normalized`, if the norm is L_2, reuse the results from the dot product for the norms.
nanshe/util/xnumpy.py: In `pair_dot_product_normalized`, if the norm is L_2, reuse the results from the dot product for the norms.

DudLab/nanshe,nanshe-org/nanshe,jakirkham/nanshe,DudLab/nanshe,nanshe-org/nanshe,jakirkham/nanshe