refactor: remove unnecessary changed_when from set_fact tasks

roles/cleanup/tasks/libvirt.yml

@@ -14,7 +14,6 @@
     - name: Initialize cleaned VM XML
       ansible.builtin.set_fact:
         cleanup_libvirt_domain_xml: "{{ cleanup_libvirt_get_xml.get_xml }}"
-      changed_when: false
 
     - name: Remove boot ISO device from VM XML (source match)
       when: boot_iso is defined and boot_iso | length > 0
@@ -28,7 +27,6 @@
       when: boot_iso is defined and boot_iso | length > 0
       ansible.builtin.set_fact:
         cleanup_libvirt_domain_xml: "{{ cleanup_libvirt_xml_strip_boot_source.xmlstring }}"
-      changed_when: false
 
     - name: Remove boot ISO device from VM XML (target fallback)
       community.general.xml:
@@ -40,7 +38,6 @@
     - name: Update cleaned VM XML after removing boot ISO
       ansible.builtin.set_fact:
         cleanup_libvirt_domain_xml: "{{ cleanup_libvirt_xml_strip_boot.xmlstring }}"
-      changed_when: false
 
     - name: Remove cloud-init ISO device from VM XML (source match)
       community.general.xml:
@@ -52,7 +49,6 @@
     - name: Update cleaned VM XML after removing cloud-init ISO source match
       ansible.builtin.set_fact:
         cleanup_libvirt_domain_xml: "{{ cleanup_libvirt_xml_strip_cloudinit_source.xmlstring }}"
-      changed_when: false
 
     - name: Remove cloud-init ISO device from VM XML (target fallback)
       community.general.xml:
@@ -64,7 +60,6 @@
     - name: Update cleaned VM XML after removing cloud-init ISO
       ansible.builtin.set_fact:
         cleanup_libvirt_domain_xml: "{{ cleanup_libvirt_xml_strip_cloudinit.xmlstring }}"
-      changed_when: false
 
     - name: Strip XML declaration for libvirt define
       ansible.builtin.set_fact:
@@ -76,7 +71,6 @@
             | regex_replace("(?i)encoding=[\"'][^\"']+[\"']", "")
             | trim
           }}
-      changed_when: false
 
     - name: Update VM definition without installer media
       community.libvirt.virt: