Update channel-detail.component.html defaultShippingZoneId is Required

Default Shipping Zone Id is required field. Alert dialog should have danger instead of warning. Also translations need to be changed. Instead of "this may cause errors" it should be 
"which will cause errors' like the tax alert

packages/admin-ui/src/lib/settings/src/components/channel-detail/channel-detail.component.html

@@ -162,7 +162,7 @@
                         </vdr-form-field>
                         <clr-alert
                             *ngIf="detailForm.value.code && !detailForm.value.defaultShippingZoneId"
-                            clrAlertType="warning"
+                            clrAlertType="danger"
                             [clrAlertClosable]="false"
                         >
                             <clr-alert-item>