[Photos] [iOS] Editing a picture when library access is off results in an error

[FSaurenbach]

Description

Disabling photo library access for Ente photos in the settings app (or never having it enabled in the first place) and editing an arbitrary picture results in „Oops, could not save edits“
I can provide logs if needed but should be easy to reproduce

Version

latest

What product are you using?

Ente Photos

What platform are you using?

Mobile - iOS

[ua741]

The app tries to save the edited photo on the user's device. When there's no permission, it results in this error. We will improve the error handling, and in the future (at least for remote-only assets), build support for saving an edited copy within the app and use that for upload.