Logged in CMS user without permissions may not see email link to file submissions #1239
Description
Follow on from #1225 (comment)
If a content author testing is testing a userform that includes a file upload field and that user does not have access to the folder where the submissions are stored, though they are an email recipient then when they do a test submission they'll get a version of the email that does not include a link to the file submission
Root cause here is (I think, haven't actually confirmed) that SubmittedFileField::getFormattedValue() is used to generate a string for both:
- The email message
- Some text that shows in the CMS to logged in user when viewing a submission
We should update things so that this method is only used within the CMS, and create a new method specifically for the email that always includes a link to the file submission