SliderGrid with empty label breaks scene

[LilithHafner]

julia> fig = Figure()

julia> sg1 = SliderGrid(fig[1,1], (;label = "1", range = 0:0.1:10))
SliderGrid()

julia> sg2 = SliderGrid(fig[2,1], (;label = "2", range = 0:0.1:10))
SliderGrid()

julia> sg3 = SliderGrid(fig[1,1], (;label = "", range = 0:0.1:10))
SliderGrid()

This is extra problematic because the empty string is the default label, and because it is a silent failure.