KroneckerNormal using deprecated batched_dot

[ricardoV94]

https://github.com/pymc-devs/pymc/blob/dc7cfeeaba98330f2881d627ee988ac267f18df2/pymc/distributions/multivariate.py#L2128

I'm not sure if this is supposed to be a matmul or vecdot. I think the later. If someone is familiar with the distribution please weigh in.

CC @bwengals or perhaps @jessegrabowski (in case we can simplify this with PyTensor magic)