fix(slack/onboard-llmo): close modal upon submission

Author: cwjwisse

src/support/slack/actions/onboard-llmo-modal.js

@@ -653,6 +653,8 @@ export function onboardLLMOModal(lambdaContext) {
         return;
       }
 
+      await ack({ response_action: 'clear' });
+
       log.info('Onboarding request with parameters:', {
         brandName,
         imsOrgId,
@@ -662,10 +664,6 @@ export function onboardLLMOModal(lambdaContext) {
         originalThreadTs,
       });
 
-      // eslint-disable-next-line max-statements-per-line
-      await new Promise((resolve) => { setTimeout(resolve, 500); });
-      await ack();
-
       // Create a slack context for the onboarding process
       // Use original channel/thread if available, otherwise fall back to DM
       const responseChannel = originalChannel || body.user.id;
@@ -890,7 +888,9 @@ export function updateIMSOrgModal(lambdaContext) {
         return;
       }
 
-      await ack();
+      await ack({
+        response_action: 'clear',
+      });
       const responseChannel = originalChannel;
       const responseThreadTs = originalThreadTs;
       const { Site } = dataAccess;