Multiple doc selection on sharepoint does not work with large selections

**Description**
Selecting multiple documents for preview/publish on Sharepoint does not work with large selection sets

**To Reproduce**
See Screenshot:

Start by locating the SharePoint selection flow for preview and publish, then reproduce the problem with a large document selection using the linked screenshot as context. Trace whether the failure occurs during selection or during the preview/publish action; done means large selections can be previewed and published successfully.

Written by the indexing model from the issue text.