fix(nvidia_drivers): guard driver info display against skipped verify

Check nvidia_verification.rc is defined instead of the var, since a skipped
task still registers a dict without rc. Fall back to nvidia_check output so
driver info shows on every successful run.

roles/nvidia_drivers/tasks/main.yml

@@ -86,8 +86,15 @@
 
     - name: Display NVIDIA driver information
       ansible.builtin.debug:
-        msg: "{{ nvidia_verification.stdout_lines }}"
-      when: nvidia_verification is defined and nvidia_verification.rc == 0
+        msg: >-
+          {{
+            nvidia_verification.stdout_lines
+            if (nvidia_verification.rc is defined and nvidia_verification.rc == 0)
+            else nvidia_check.stdout_lines
+          }}
+      when: >-
+        (nvidia_verification.rc is defined and nvidia_verification.rc == 0)
+        or nvidia_check.rc == 0
 
   rescue:
     - name: Remove partially installed packages on failure