Issue Summary

Adding a new Custom Emoji fails with error + Retry button even though it works, meaning the custom emoji gets added as expected.

This is happening both, through admin.atlassian.com as well as while editing a page in Confluence.

Steps to Reproduce

1. Access https://YOUR_SITE.atlassian.com/s/YOUR_CLOUDID/emoji or access the "Add new emoji" option within the Confluence Cloud Editor.
2. Attempt to Upload a new Custom Emoji

Expected Results

The return message shouldn't be misleading / not exhibited at all.

Actual Results

The custom emoji upload works but a misleading message to Retry is shown, like it it did timeout.

Workaround

Simply ignore the issue and use the new emoji.