Keep the lib32 driver helper from failing when no GPU is detected

With an empty package list the trailing && left the helper with exit
status 1, which stopped the Steam installer before Steam was installed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bin/omarchy-install-gaming-gpu-lib32

@@ -27,4 +27,6 @@ elif omarchy-hw-nvidia-without-gsp; then
   PACKAGES+=(lib32-nvidia-580xx-utils)
 fi
 
-(( ${#PACKAGES[@]} > 0 )) && omarchy-pkg-add "${PACKAGES[@]}"
+if (( ${#PACKAGES[@]} > 0 )); then
+  omarchy-pkg-add "${PACKAGES[@]}"
+fi

bin/omarchy-install-gaming-steam

@@ -10,8 +10,9 @@ echo "Installing Steam..."
 # Install the lib32 drivers first. Steam depends on the virtual package
 # lib32-vulkan-driver, and omarchy-pkg-add runs pacman with --noconfirm, which
 # resolves an unsatisfied virtual dependency to the first provider without
-# asking. That provider is lib32-nvidia-utils, so installing Steam ahead of the
-# drivers pulls the NVIDIA stack onto machines that have no NVIDIA GPU.
+# asking. That provider is currently lib32-nvidia-utils, so installing Steam
+# ahead of the drivers pulls the NVIDIA stack onto machines that have no NVIDIA
+# GPU.
 omarchy-install-gaming-gpu-lib32
 omarchy-pkg-add steam