how to add new image type

Problem/Motivation

Hi, tried to add image/heic like this:

0,1,2,3,4,5,6,7,8,9,10,11,12,13,
text/csv,text/plain,application/csv,text/comma-separated-values,application/excel,application/vnd.ms-excel,application/vnd.msexcel,text/anytext,application/octet-stream,application/txt,
text/xml,text/plain,application/xml,
image/svg+xml,image/svg,
text/x-po,application/octet-stream,
text/plain,application/pkix-cert,application/pkix-crl,application/x-x509-ca-cert,application/x-x509-user-cert,application/x-pem-file,application/pgp-keys,application/x-pkcs7-certificates,application/x-pkcs7-certreqresp,application/x-pkcs7-crl,application/pkcs7-mime,application/pkcs8,application/pkcs10,application/x-pkcs12,
application/octet-stream,application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,
image/heic,image/heif,image/heic-sequence,image/heif-sequence

but it still wont let me upload heic files.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes