fix: define variable for reset confirmation (#10303)

playbooks/reset.yml

@@ -21,11 +21,12 @@
     - name: Reset Confirmation
       pause:
         prompt: "Are you sure you want to reset cluster state? Type 'yes' to reset your cluster."
-      register: reset_confirmation
+      register: reset_confirmation_prompt
       run_once: True
       when:
         - not (skip_confirmation | default(false) | bool)
         - reset_confirmation is not defined
+
     - name: Check confirmation
       fail:
         msg: "Reset confirmation failed"