* make word meaning activity refetch new definition if cache expires
* generated
* bake expire at into response json
* generated
* add expire at in to and from json method
---------
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: ggurdin <46800240+ggurdin@users.noreply.github.com>