Fix module dependency resolution for clean builds

- Use container modules from kernel_modules stage for dependency resolution
- Remove dependency on initramfs modules that haven't been copied yet
- Fixes regression where clean builds had empty stage1.list
- Dependency resolution now works correctly in clean build scenarios

config/zinit.old/init/routing.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo "Enable ip forwarding"
+echo 1 > /proc/sys/net/ipv4/ip_forward