Restore 200 OK + response payload for save and delete endpoints (#55535) (#55542)

Author: jloleysens

x-pack/legacy/plugins/watcher/server/np_ready/routes/api/watch/register_delete_route.ts

@@ -24,8 +24,9 @@ export function registerDeleteRoute(deps: RouteDependencies, legacy: ServerShim)
     const { watchId } = request.params;
 
     try {
-      await deleteWatch(callWithRequest, watchId);
-      return response.noContent();
+      return response.ok({
+        body: await deleteWatch(callWithRequest, watchId),
+      });
     } catch (e) {
       // Case: Error from Elasticsearch JS client
       if (isEsError(e)) {

x-pack/legacy/plugins/watcher/server/np_ready/routes/api/watch/register_save_route.ts

@@ -76,8 +76,9 @@ export function registerSaveRoute(deps: RouteDependencies, legacy: ServerShim) {
 
     try {
       // Create new watch
-      await saveWatch(callWithRequest, id, serializedWatch);
-      return response.noContent();
+      return response.ok({
+        body: await saveWatch(callWithRequest, id, serializedWatch),
+      });
     } catch (e) {
       // Case: Error from Elasticsearch JS client
       if (isEsError(e)) {