This slot allows for injecting items into the bottom of the post-publish panel that appears after a post is published.
Example
import { registerPlugin } from '@wordpress/plugins';
import { PluginPostPublishPanel } from '@wordpress/editor';
const PluginPostPublishPanelTest = () => (
<PluginPostPublishPanel>
<p>Post Publish Panel</p>
</PluginPostPublishPanel>
);
registerPlugin( 'post-publish-panel-test', {
render: PluginPostPublishPanelTest,
} );