`@SArray` is sometimes not consistent with Base

julia> using StaticArrays

julia> @SArray [1:3;]
1-element SVector{1, UnitRange{Int64}} with indices SOneTo(1):
 1:3

julia> [1:3;]
3-element Vector{Int64}:
 1
 2
 3

julia> @SArray [(1:3)...]
1-element SVector{1, Tuple{Int64, Int64, Int64}} with indices SOneTo(1):
 (1, 2, 3)

julia> [(1:3)...]
3-element Vector{Int64}:
 1
 2
 3

I'm not sure we need to support these calls, and it would be better to throw errors than the current behaviors.

Start by reproducing the two @SArray examples shown in the issue and compare them with the corresponding Base array expressions. Trace the @SArray entry point to determine whether these inputs should be supported or rejected; done means the behavior is intentionally consistent with Base or produces clear errors for the unsupported cases.