Merge branch 'jpdean/mixed_mesh_hackathon_2' of github.com:FEniCS/dol… #33428

Job	Run time
Lint	18s
fenicsx-refs / Set FEniCSx component git refs	1s
Build and test	23m 34s
Build and publish docs	5m 26s
Build and test (linux-gnu-real32-32, ghcr.io/fenics/test-env:current-openmpi)	10m 43s
Build and test (linux-gnu-real64-32, ghcr.io/fenics/test-env:current-openmpi)	11m 9s
Build and test (linux-gnu-complex64-32, ghcr.io/fenics/test-env:current-openmpi)	13m 19s
Build and test (linux-gnu-complex128-32, ghcr.io/fenics/test-env:current-openmpi)	13m 53s
Build and test (linux-gnu-real64-64, ghcr.io/fenics/test-env:current-openmpi)	11m 20s
Build and test (linux-gnu-complex128-64, ghcr.io/fenics/test-env:current-openmpi)	13m 57s
Build and test (linux-gnu-real64-32, ghcr.io/fenics/test-env:current-mpich)	11m 14s
Build and test (linux-gnu-complex128-32, ghcr.io/fenics/test-env:current-mpich)	13m 57s
	2h 8m 51s

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