Dear community,

I am trying to create the DOLFINx form for a right-hand side which contains a scalar quadrature element. However, an error appears as

```
File "/usr/local/lib/python3.10/dist-packages/ffcx/ir/representationutils.py", line 92, in map_integral_points
assert points.shape[1] == tdim - 1
```

The MWE is as follows.

```
import numpy as np
from dolfinx.mesh import create_box, CellType
from mpi4py import MPI
from dolfinx.fem import VectorFunctionSpace, FunctionSpace, Function, Constant, form
import ufl
mesh = create_box(MPI.COMM_WORLD, [[0, 0, 0], [1, 1, 1]],
[1, 1, 1], CellType.hexahedron)
V = VectorFunctionSpace(mesh, ("CG", 1))
v = ufl.TestFunction(V)
elem = ufl.FiniteElement("Quadrature", mesh.ufl_cell(), 2, quad_scheme="default")
S = FunctionSpace(mesh, elem)
c = Function(S)
b = Constant(mesh, np.array([0.0, 0.0, 0.0]))
t = Constant(mesh, np.array([0.0, 0.0, 0.0]))
L = ufl.dot(c*b, v)*ufl.dx + ufl.dot(t, v)*ufl.ds
form(L)
```

The error disappears if we comment the term of `ufl.dot(t, v)*ufl.ds`

or define `c`

in a DG-0 function space. I am using FEniCSx v0.6.0 and would like to know how to fix it. Thanks!