libwacom: mark unavailable for static (#426854)

pkgs/by-name/li/libwacom/package.nix

···
     description = "Libraries, configuration, and diagnostic tools for Wacom tablets running under Linux";
     teams = [ lib.teams.freedesktop ];
     license = lib.licenses.hpnd;
+    badPlatforms = [
+      # Mandatory shared library.
+      lib.systems.inspect.platformPatterns.isStatic
+    ];
   };
 })