Generation of vector forms on manifolds is broken

Generating one of the vector forms on manifolds is currently broken.

Trying to generate e.g. p2_vector_laplace_beltrami_0_0_blending_q3 results in:

[MainProcess] — [2025-04-23 16:38:19,413] — [     generate_all_hyteg_forms.py] — [line 1340] - [    INFO]   - Generating code for class p2_vector_laplace_beltrami_0_0_blending_q3, 2D ... done (took 0.68 s)
Traceback (most recent call last):
  File "/import/caprica-data/mohr/Terra/terraneo/Redesign/hog/generate_all_hyteg_forms.py", line 1420, in <module>
    main()
  File "/import/caprica-data/mohr/Terra/terraneo/Redesign/hog/generate_all_hyteg_forms.py", line 1353, in main
    mat = form_func(
          ^^^^^^^^^^
  File "/import/caprica-data/mohr/Terra/terraneo/Redesign/hog/generate_all_hyteg_forms.py", line 1066, in form_func
    return vector_laplace_beltrami(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/import/caprica-data/mohr/Terra/terraneo/Redesign/hog/hog/manifold_forms.py", line 656, in vector_laplace_beltrami
    projection_mat
  File "/import/caprica-data/mohr/Software/python-for-hog/lib/python3.11/site-packages/sympy/core/decorators.py", line 106, in binary_op_wrapper
    return func(self, other)
           ^^^^^^^^^^^^^^^^^
  File "/import/caprica-data/mohr/Software/python-for-hog/lib/python3.11/site-packages/sympy/matrices/common.py", line 2771, in __mul__
    return self.multiply(other)
           ^^^^^^^^^^^^^^^^^^^^
  File "/import/caprica-data/mohr/Software/python-for-hog/lib/python3.11/site-packages/sympy/matrices/common.py", line 2793, in multiply
    raise ShapeError("Matrix size mismatch: %s * %s." % (
sympy.matrices.common.ShapeError: Matrix size mismatch: (3, 3) * (2, 1).

This might or might not be related to #48 (closed).