LWG4412 Fix declaration of zero_element and uninit_element

Fixes NB US-174-282 (C++26 CD).

Author: eisenwave

source/numerics.tex

@@ -16625,8 +16625,8 @@
       const typename basic_vec<T, Abi>::mask_type& mask, flags<Flags...> f = {});
 
   // \ref{simd.permute.static}, static permute
-  static constexpr @\exposid{simd-size-type}@ @\libmember{zero_element}{simd}@   = @\impdefx{value of \tcode{simd::zero_element}}@;
-  static constexpr @\exposid{simd-size-type}@ @\libmember{uninit_element}{simd}@ = @\impdefx{value of \tcode{simd::uninit_element}}@;
+  inline constexpr @\exposid{simd-size-type}@ @\libmember{zero_element}{simd}@   = @\impdefx{value of \tcode{simd::zero_element}}@;
+  inline constexpr @\exposid{simd-size-type}@ @\libmember{uninit_element}{simd}@ = @\impdefx{value of \tcode{simd::uninit_element}}@;
 
   template<@\exposid{simd-size-type}@ N = @\seebelow@, @\exposconcept{simd-vec-type}@ V, class IdxMap>
     constexpr resize_t<N, V> permute(const V& v, IdxMap&& idxmap);