more image resize options when sending

perhaps an XL size for 1080p or similar? the smaller sizings are all quite small these days

The issue does not name any files, tests, or entry points. Start by locating the image-resizing options used when sending images in the iOS app, then clarify the target sizes and expected behavior; done means an agreed larger option, such as an XL size around 1080p, is available when sending.

Written by the indexing model from the issue text.