fix(configuration): guard user keys access to avoid dict.keys() method collision

roles/configuration/tasks/users.yml

@@ -42,7 +42,7 @@
   no_log: true
 
 - name: Ensure .ssh directory exists
-  when: (item.value['keys'] | default([]) | length) > 0
+  when: ('keys' in item.value) and (item.value['keys'] | length) > 0
   ansible.builtin.file:
     path: "/mnt/home/{{ item.key }}/.ssh"
     state: directory
@@ -55,7 +55,7 @@
     label: "{{ item.key }}"
 
 - name: Deploy SSH authorized_keys
-  when: (item.value['keys'] | default([]) | length) > 0
+  when: ('keys' in item.value) and (item.value['keys'] | length) > 0
   ansible.builtin.copy:
     content: "{{ item.value['keys'] | join('\n') }}\n"
     dest: "/mnt/home/{{ item.key }}/.ssh/authorized_keys"