Update cxserver to handle Parsoid HTML change from <figure-inline> to <span> as proposed in T266143: Parsoid clients should handle inline media HTML change from <figure-inline> to <span>.
- MWImage adaptation class would need change to accept span as the tag for inline images. Corresponding tests will require update.
- As per T266143, figure-inline need to be retained for some more time.
- Make sure that the above changes are not breaking any tests we have