Specialize map!(f, array)

[jishnub]

Julia v1.12 introduces the 2-term map!, where the source and the destination are identical. Currently, this package errors without a third term, as it can't find the source array. This PR ensures that the method works for StaticArrayss.

After this,

julia> M = MVector(1,3,4)
3-element MVector{3, Int64} with indices SOneTo(3):
 1
 3
 4

julia> map!(x->x^2, M)
3-element MVector{3, Int64} with indices SOneTo(3):
  1
  9
 16

julia> M
3-element MVector{3, Int64} with indices SOneTo(3):
  1
  9
 16