Tests are failing with missing method for zero

[Sbozzolo]

See for example:
https://buildkite.com/clima/climacore-ci/builds/5192
https://buildkite.com/clima/climacore-ci/builds/5198
https://buildkite.com/clima/climacore-ci/builds/5200
https://buildkite.com/clima/climacore-ci/builds/5203

The error is:

LoadError: MethodError: no method matching zero(::SchurComplementW{@NamedTuple{∂ᶜ𝔼ₜ∂ᶠ𝕄_mode::Symbol, ∂ᶠ𝕄ₜ∂ᶜρ_mode::Symbol}, Base.RefValue{Float32}, ClimaCore.Fields.Field{VIJHF{ClimaCore.Operators.StencilCoefs{ClimaCore.Utilities.PlusHalf{Int64}(-1), ClimaCore.Utilities.PlusHalf{Int64}(0), Tuple{Float32, Float32}}, 10, 5, CUDA.CuArray{Float32, 5, CUDA.DeviceMemory}}, ClimaCore.Spaces.ExtrudedFiniteDifferenceSpace{ClimaCore.Grids.ExtrudedFiniteDifferenceGrid{ClimaCore.Grids.SpectralElementGrid2D{ClimaCore.
.....