Global Templates allows only for file types which can't be created using Collabora Online #5277
Description
Describe the bug
When uploading a template in Settings > Administration > Office > Global Templates, the upload file open dialogue only allows for actual template file types (ott, dotx, ...) by default. But Collabora Online doesn't allow creating template files like ott, dotx, ...
Normal office files (odt, docx, ...) can only be uploaded, if the user manually selects "All files" in the open file dialogue. And indeed, using a standard ODT file (not an artificially renamed OTT) works fine for use in the Global Templates setting.
This is not a huge bug, but probably a minor inconvenience, which is very easy to fix (easy hack). It probably only needs the other file types added to this upload open file dialogue list:
Supporting saving+loading OTT files in Collabora Online seems a bit more complicated. So the suitable solution seems to simply allow for non-template odt, docx, ... files.
To Reproduce
Go to Settings > Administration > Office > Global Templates and try uploading an ODT.
Result: only available when choosing All files which is irritating for admins.
Try saving an OTT using Online Writer > File > Save As.
Expected behavior
Global Templates should allow for file types by default, which can actually be created using Collabora Office.
Server details
Version of the richdocuments app: 9.0.2
Version of Collabora Online: 25.04.8.1.1
Other
Maybe related:
https://github.com/nextcloud/richdocuments/issues/2430- Default templates not working - blank.ott and blank.dotx
https://github.com/nextcloud/richdocuments/issues/2315- Unable to open a template files (ott, ots, otp, otg) with Collabora Online / Nextcloud Office