More work towards supporting mixed-topology meshes #33417

Job	Run time
Lint	15s
fenicsx-refs / Set FEniCSx component git refs	1s
Build and test (linux-gnu-real32-32, ghcr.io/fenics/test-env:current-openmpi)	10m 36s
Build and test	23m 0s
Build and test (linux-gnu-real64-32, ghcr.io/fenics/test-env:current-openmpi)	11m 1s
Build and publish docs	5m 37s
Build and test (linux-gnu-complex64-32, ghcr.io/fenics/test-env:current-openmpi)	13m 32s
Build and test (linux-gnu-complex128-32, ghcr.io/fenics/test-env:current-openmpi)	13m 58s
Build and test (linux-gnu-real64-64, ghcr.io/fenics/test-env:current-openmpi)	11m 5s
Build and test (linux-gnu-complex128-64, ghcr.io/fenics/test-env:current-openmpi)	14m 7s
Build and test (linux-gnu-real64-32, ghcr.io/fenics/test-env:current-mpich)	11m 12s
Build and test (linux-gnu-complex128-32, ghcr.io/fenics/test-env:current-mpich)	13m 50s
	2h 8m 14s

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