osbuild-composer and as a result also Image Builder are returning an
invalid `image_status.status` value "running" for composes which are in
progress.
Extend the front-end to handle all valid `image_status.status` values,
specifically also "building", "uploading" and "registering". Also keep
support for the invalid value "running" for some time to ensure backward
compatibility with older osbuild-composer versions.
Modify test cases in `ImagesTable.test.js` to verify all possible
`image_status.status` values. Also modify the `image_status` values used
for testing to what is actually returned by osbuild-composer Cloud API
and as a result also by Image Builder's API.
Signed-off-by: Tomas Hozza <thozza@redhat.com>