feat(releases-widget): show project description when release description is missing (#3635)

Co-authored-by: Meier Lukas <meierschlumpf@gmail.com>

packages/translation/src/lang/en.json

@@ -2309,6 +2309,7 @@
       "openProjectPage": "Open Project Page",
       "openReleasePage": "Open Release Page",
       "releaseDescription": "Release Description",
+      "projectDescription": "Project Description",
       "created": "Created",
       "error": {
         "label": "Error",