meson: Use explicit setup subcommand

Fix the following warning in Meson 0.64:

WARNING: Running the setup command as `meson [options]` instead of `meson setup [options]` is ambiguous and deprecated.

Introduced in https://github.com/mesonbuild/meson/commit/3c7ab542c0c4770241eae149b0d4cd8de329aee0

pkgs/development/tools/build-managers/meson/setup-hook.sh

@@ -20,7 +20,7 @@ mesonConfigurePhase() {
 
     echo "meson flags: $mesonFlags ${mesonFlagsArray[@]}"
 
-    meson build $mesonFlags "${mesonFlagsArray[@]}"
+    meson setup build $mesonFlags "${mesonFlagsArray[@]}"
     cd build
 
     if ! [[ -v enableParallelBuilding ]]; then