Update widget on click dropdown item when creating epic from epic

app/assets/javascripts/vue_shared/components/split_button.vue

@@ -49,6 +49,9 @@ export default {
     triggerEvent() {
       this.$emit(this.selectedItem.eventName);
     },
+    change(item) {
+      this.$emit('change', item);
+    },
   },
 };
 </script>
@@ -69,7 +72,7 @@ export default {
         active-class="is-active"
         @click="
           selectedItem = item;
-          triggerEvent();
+          change(item);
         "
       >
         <strong>{{ item.title }}</strong>

ee/app/assets/javascripts/related_items_tree/components/epic_actions_split_button.vue

@@ -22,6 +22,11 @@ export default {
   components: {
     SplitButton,
   },
+  methods: {
+    change(item) {
+      this.$emit(item.eventName);
+    },
+  },
 };
 </script>
 
@@ -33,5 +38,6 @@ export default {
     right
     size="sm"
     v-on="$listeners"
+    @change="change"
   />
 </template>

ee/app/assets/javascripts/related_items_tree/components/issue_actions_split_button.vue

@@ -22,6 +22,11 @@ export default {
   components: {
     SplitButton,
   },
+  methods: {
+    change(item) {
+      this.$emit(item.eventName);
+    },
+  },
 };
 </script>
 
@@ -33,5 +38,6 @@ export default {
     right
     size="sm"
     v-on="$listeners"
+    @change="change"
   />
 </template>