File-picker for "Send image" does only show one image-format (jpg) by default

[MoonlightWave-12]

Bug Description

The default file-type-filter in the file-picker that is opened with "Send image", does only show a single file-type (jpg) by default.
There is currently no option for showing all (compatible) image-file-types at the same time.

Steps to Reproduce

1. Open a chat.
2. Use "Send Image" to choose an image-file.
3. Notice that the file-type-filter is set to "jpg" by default.
4. Open a folder with an image in PNG- or WebP-format, and notice that it is not visible by default.

Expected Behavior

There should be an option for the file-type-filter to show all (compatible) image-file-types, and it should be the default-setting.

App Version

1.25.0 - Flatpak

Additional Platform Information

Debian GNU/Linux Testing (Trixie)

Additional Context

I sometimes try to send an image in WebP-format with "Send Image", and then wonder why i cannot find it, until i notice that i have to switch the file-type-filter. Because that is more complicated, i almost always use "Send file" instead.