Exchange `DGMulti` dispatch types for new supertypes

The idea is to replace e.g. https://github.com/trixi-framework/Trixi.jl/blob/9a19e155e5d50c1c9811f15e00f1bc49675fed6f/src/solvers/dgmulti/flux_differencing.jl#L254 with ```julia @inline function has_sparse_operators(::AbstractTensorProductElement, ``` This was made possible by https://github.com/jlchan/NodesAndModes.jl/pull/17