fix(virtualization): Hide VM Add Components dropdown without change permission (#21634)

Wrap the VirtualMachine "Add Components" dropdown in a
`virtualization.change_virtualmachine` permission check to match Device
behavior and prevent users without change permission from seeing
component add actions.

Fixes #21580

netbox/templates/virtualization/virtualmachine/base.html

@@ -16,7 +16,7 @@
 {% endblock %}
 
 {% block extra_controls %}
-
+  {% if perms.virtualization.change_virtualmachine %}
     <div class="dropdown">
       <button id="add-components" type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
         <i class="mdi mdi-plus-thick" aria-hidden="true"></i> {% trans "Add Components" %}
@@ -34,5 +34,5 @@
         {% endif %}
       </ul>
     </div>
-
+  {% endif %}
 {% endblock %}