fix(global_defaults): validate system.users as the documented dict on both paths

roles/global_defaults/tasks/_validate_input.yml

@@ -8,11 +8,10 @@
     that:
       - system is mapping
       - system.network is not defined or system.network is mapping
-      - system.users is not defined or system.users is mapping
       - system.root is not defined or system.root is mapping
       - system.luks is not defined or system.luks is mapping
       - system.features is not defined or system.features is mapping
-    fail_msg: "system and its nested keys (network, root, luks, features, users) must be dictionaries."
+    fail_msg: "system and its nested keys (network, root, luks, features) must be dictionaries."
     quiet: true
 
 - name: Validate DNS lists (not strings)
@@ -24,19 +23,6 @@
     fail_msg: "system.network.dns.servers and system.network.dns.search must be lists, not strings."
     quiet: true
 
-- name: Validate system.users entries
-  when: system.users is defined and system.users is mapping and system.users | length > 0
-  ansible.builtin.assert:
-    that:
-      - item.value is mapping
-      - item.key | string | length > 0
-      - ('keys' not in item.value) or (item.value['keys'] is iterable and item.value['keys'] is not string)
-    fail_msg: "Each system.users entry must be a dict keyed by username; 'keys' must be a list."
-    quiet: true
-  loop: "{{ system.users | dict2items }}"
-  loop_control:
-    label: "{{ item.key }}"
-
 - name: Validate system features input types
   when: system.features is defined
   loop: "{{ system_defaults.features | dict2items | map(attribute='key') | list }}"