Learn a photograph's shape from its header

A panorama the merge did not make, a stitch from another program or a
phone's sweep, never had a width or height in the catalog, so it could
never be given a wide cell. The header read that dates a photograph now
records its size as it is seen, orientation applied, alongside the date.

ui/dr-ui/src/library/thumbnails_gen.rs

@@ -517,6 +517,7 @@ pub(super) async fn collect_metadata(
         captured_at: md.captured_at,
         captured_offset: md.captured_offset,
         camera: camera_label(md.make.as_deref(), md.model.as_deref()),
+        size: MetadataFound::upright_size(&md),
         lens: md.lens.map(|l| l.trim().to_string()),
         iso: md.iso,
     });