[FIX] event: correctly align event form view checkboxes

With new views, better use a standard label / content two-items display
instead of using a div + colspan + CSS class. Issue introduced by the
new from grid layout.

Task-2996467

X-original-commit: 0b8ead6ade89371b31c0213dd7a3909ff3b56be7
Part-of: odoo/odoo#104770

addons/event/views/event_event_views.xml

@@ -57,8 +57,8 @@
                             <field name="address_id"
                                 context="{'show_address': 1}"
                                 options='{"always_reload": True}'/>
-                            <div colspan="2" class="o_checkbox_optional_field">
-                                <label for="seats_limited" string="Limit Registrations"/>
+                            <label for="seats_limited" string="Limit Registrations"/>
+                            <div>
                                 <field name="seats_limited"/>
                                 <span attrs="{'invisible': [('seats_limited', '=', False)], 'required': [('seats_limited', '=', False)]}">to <field name="seats_max" class="oe_inline"/> Confirmed Attendees</span>
                             </div>