if check mode, verify packages are installed before continuing

If packages are not installed, commands will fail in check mode.

tasks/main.yml

@@ -10,7 +10,12 @@
     state: present
     use: "{{ (__aide_is_ostree | d(false)) |
              ternary('ansible.posix.rhel_rpm_ostree', omit) }}"
+  register: __aide_install_packages
 
+- name: Packages are installed
+  # either run mode or check mode and no changes to packages
+  when: not ansible_check_mode or (ansible_check_mode and not __aide_install_packages.changed)
+  block:
     - name: Get AIDE version
       ansible.builtin.command:
         cmd: aide --version