[FIX] web: search bar: no button role for comparison facet label

The label of a facet of type "comparison" had the role "button" while
click on it has no effect. That role should be reserved for the label of
a facet that is associated with a domain (e.g. a facet of type "filter").

X-original-commit: 4c649abf491b32c218769b0bb1eba19881dedbb0
Part-of: odoo/odoo#126496

addons/web/static/src/search/search_bar/search_bar.xml

@@ -12,7 +12,7 @@
                 >
                 <div class="o_searchview_facet_label rounded-start-2"
                     t-on-click="(ev) => this.onFacetLabelClick(ev.target, facet)"
-                    t-att-role="facet.type != 'groupBy' ? 'button' : 'img'"
+                    t-att-role="facet.domain ? 'button' : 'img'"
                     t-att-class="{
                         'text-bg-action d-flex align-items-center': facet.type == 'groupBy',
                         'btn btn-primary rounded-end-0 p-0': facet.type == 'field' || facet.type == 'filter',