MM-53764 - Fix: Improve limits on Opengraph Data Cache (#24177)

* enforce strict opengraph cache entry size limit

* move json marshalling and error checking into parsOpenGraphMetadata fn

* fix linting

* fix potential nil deref

* Revert "fix potential nil deref"

This reverts commit 095bcd496e9b8d97ca63d3a99e2e46eec58ef7ae.

* Revert "fix linting"

This reverts commit f3e1f7b27634ca0567fd0fef01ac23f5e39009a7.

* Revert "move json marshalling and error checking into parsOpenGraphMetadata fn"

This reverts commit ba9a1e13b0fb9d4579077b7b37666e950a5fb6ed.

* Revert "enforce strict opengraph cache entry size limit"

This reverts commit d1de4a8fa40e58ac85c85f66de27ec5aca884b18.

* remove /opengraph api endpoint

* i18n

* removing unneeded action and reducer

server/i18n/en.json

@@ -2391,10 +2391,6 @@
       "other": "{{.Count}} images sent: {{.Filenames}}"
     }
   },
-  {
-    "id": "api.post.link_preview_disabled.app_error",
-    "translation": "Link previews have been disabled by the system administrator."
-  },
   {
     "id": "api.post.patch_post.can_not_update_post_in_deleted.error",
     "translation": "Can not update a post in a deleted channel."