File Too Large Error not handled properly

[ngaruko]

Describe the bug
When loading a 'large size' image , an error message is displayed but there is no indication of what size is acceptable - just in case the user has to adjust the size of the image.
To Reproduce
Steps to reproduce the behavior:

1. Add a image-related form to your server (you can pick one from demo-forms, eg photos-on-android)
   2 . Login as an offline user.
2. Try to submit your form with an image that is say 1051 x 707 pixels or larger (the cut-off/acceptable size is not clear in the error )
3. See the error.

Expected
Either form should be submitted and if there is a size limit, the error should be clear enough on acceptable image size - just in case the user has to adjust the size of the image.

Logs
No logs in console
Screenshots
If applicable, add screenshots to help explain your problem.

Environment

• Instance: localhost
• Browser: Firefox, Chrome
• Client platform: MacOS
• App: webapp
• Version: 3.9