Restrict users from uploading HEIC file type extensions

Summary:

Lately our Expense admin has seen an increase in HEIC files being attached on expense reports.

She can not open these files to review so she ends up sending the report back to the employee to convert to Jpeg or Pdf.

We tried getting a converter ,however our helpdesk says that they would not be able to install since there's a charge /fee involved for that converter.

Questions for Oracle:

1)Are you aware of a fix in the works for this?  Or is there something she can do to review these files rather than send them back to the employee?