Fix false 'Build Scheduled' notification when parent multibranch is d… (#26117)

Author: LakshyaBagani

core/src/main/resources/hudson/views/BuildButtonColumn/icon.js

@@ -14,7 +14,7 @@ Behaviour.specify(
         method: "post",
         headers: crumb.wrap({}),
       }).then((rsp) => {
-        if (rsp.ok) {
+        if (rsp.status === 201) {
           notificationBar.show(message, notificationBar.SUCCESS);
         } else {
           notificationBar.show(failure, notificationBar.ERROR);

core/src/main/resources/lib/hudson/project/configurable/configurable.js

@@ -10,7 +10,7 @@
         method: "post",
         headers: crumb.wrap({}),
       }).then((rsp) => {
-        if (rsp.ok) {
+        if (rsp.status === 201) {
           notificationBar.show(success, notificationBar.SUCCESS);
         } else {
           notificationBar.show(failure, notificationBar.ERROR);