Fix twitter metadata info merging (#47433)
* Fix rest of twitter metadata when merging with static metadata images,
should include title/description/etc. properties
* rename `opengraph` to `openGraph` property
Related to NEXT-266
Follow up for #47425
Fixing the twitter metadata are missing found while testing
<img width="583" alt="image"
src="https://user-images.githubusercontent.com/4800338/227190635-60867873-d3b5-4bdc-ab5a-24abdded8faa.png">
