Fixing prebuilds env (#4925)
Fixing prebuilds env (#4925)

* Removing an unneeded global install of npm

* Moved the local prebuilds env to the "npm ci"

* Removed install of ./tests

* Correcting a step name

* Update pr-realm-js.yml
realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js,realm/realm-js