I asked this question via the CIC Facebook messenger and got the following response:
“please note that no immigration decisions are made based on our social media answers. If WES evaluated your law degree as a four-year Canadian bachelors degree, you should be eligible for the extra points for holding a "professional degree." Professional degrees, by IRCC's definition, are programs and academic courses of higher theoretical and technical content which can be applied towards a degree, or which focus on preparation for further research, or on entry into professions with high skill requirements.”
I am going to claim professional degree on the EE form and then explain if I get an ITA.