[6.x] When sets are expanded, add isolation to force a new stacking context.… (#14121)

When sets are expanded add isolation to force a new stacking context. This means outer Bard toolbars will have a effectively have a higher "z-index" than ones inside, so inner toolbars don't appear above outer ones

Author: jaygeorge

resources/js/components/fieldtypes/bard/Set.vue

@@ -75,7 +75,7 @@
                 </div>
             </header>
 
-            <div v-if="index !== undefined" v-show="!collapsed" :class="{ 'contain-paint': collapsed }">
+            <div v-if="index !== undefined" v-show="!collapsed" :class="{ 'contain-paint': collapsed, 'isolate': !collapsed }">
                 <FieldsProvider
                     :fields="fields"
                     :as-config="false"

resources/js/components/fieldtypes/replicator/Set.vue

@@ -200,7 +200,7 @@ reveal.use(rootEl, () => emit('expanded'));
                 </div>
             </header>
 
-            <div v-show="!collapsed" :class="{ 'contain-paint': collapsed }">
+            <div v-show="!collapsed" :class="{ 'contain-paint': collapsed, 'isolate': !collapsed }">
                 <div :tabindex="collapsed ? -1 : undefined" :inert="collapsed">
                     <FieldsProvider
                         :fields="config.fields"