sacado: workaround icpc ice with is_same_v

For intel icpc compilers use inline constexpr rather than static constexpr for is_same_v specialization introduced in trilinos#13392
This is to workaround intel ICE issues that should not be related to the change but occur when building Trilinos with or without Kokkos' develop branch

Error output sample:
```
/home/ndellin/trilinos/Trilinos/packages/sacado/test/UnitTests/ConditionalReturnTypeTest.cpp(48): internal error: assertion failed at: "il.c", line 10434 in trans_unit_for_source_corresp
```

packages/sacado/src/Kokkos_LayoutContiguous.hpp

@@ -83,15 +83,23 @@ namespace std {
   };
 
   template <class Layout, unsigned Stride>
+#if defined(KOKKOS_COMPILER_INTEL)
+  inline constexpr bool is_same_v< Kokkos::LayoutContiguous<Layout,Stride>, Layout> = is_same<Kokkos::LayoutContiguous<Layout,Stride>, Layout>::value;
+#else
   static constexpr bool is_same_v< Kokkos::LayoutContiguous<Layout,Stride>, Layout> = is_same<Kokkos::LayoutContiguous<Layout,Stride>, Layout>::value;
+#endif
 
   template <class Layout, unsigned Stride>
   struct is_same< Layout, Kokkos::LayoutContiguous<Layout,Stride> > {
     static const bool value = true;
   };
 
   template <class Layout, unsigned Stride>
+#if defined(KOKKOS_COMPILER_INTEL)
+  inline constexpr bool is_same_v< Layout, Kokkos::LayoutContiguous<Layout,Stride>> = is_same<Kokkos::LayoutContiguous<Layout,Stride>, Layout>::value;
+#else
   static constexpr bool is_same_v< Layout, Kokkos::LayoutContiguous<Layout,Stride>> = is_same<Kokkos::LayoutContiguous<Layout,Stride>, Layout>::value;
+#endif
 }
 
 #if KOKKOS_VERSION >= 40499