Adjust Arachne type checks for different C++ versions

This commit addresses potential compatibility issues with different
versions of C++ by adding conditionals to the `junction` concept in the
`arachne.h` utility file. As some versions may not support the
`std::integral` check, we fall back to directly assessing `val.w` if
the C++ version is older or a particular library version with
compatibility issues is detected. This change ensures successful
compilation across varying environments.

Contributes to CURA-10724

include/utils/types/arachne.h

@@ -85,7 +85,12 @@ template<class T>
 concept junction = requires(T val)
 {
     requires point2d<decltype(val.p)>;
+#if (__cplusplus > 201703L) && (!defined(_LIBCPP_VERSION) || (__clang_major__ > 13))
+    // https://stackoverflow.com/questions/71818683/stdintegral-not-found-in-clang13-c20-error
     requires std::integral<decltype(val.w)>;
+#else
+    val.w;
+#endif
 };
 
 /*!