refactor: add loop_control labels to dict-based loops across all roles

roles/partitioning/tasks/btrfs.yml

@@ -54,6 +54,8 @@
         - { subvol: pkg }
         - { subvol: var_log }
         - { subvol: var_log_audit }
+      loop_control:
+        label: "{{ item.subvol }}"
       register: partitioning_btrfs_subvol_result
 
     - name: Set quotas for subvolumes
@@ -61,6 +63,8 @@
       ansible.builtin.command: btrfs qgroup limit {{ item.quota }} /mnt/{{ '@' if item.subvol == 'root' else '@' + item.subvol }}
       loop:
         - { subvol: home, quota: "{{ partitioning_btrfs_home_quota }}" }
+      loop_control:
+        label: "{{ item.subvol }}"
       register: partitioning_btrfs_qgroup_result
       changed_when: false