Opening the jump-in site in the events page without any parameter shows an unwanted event #35
Description
When opening the jump in site, in the events page, without any query parameters, the site will show a wrong event, as it should not show any.
It seems that when there's no query parameter for the coordinates or the event id, the site defaults to querying the events service with the coordinates (0,0), without defaulting to the default realm. This query ends up retrieving all events from worlds, which all have (0,0) as coordinate and a different (not filtered) realm.
Steps to reproduce:
- Go to https://decentraland.org/jump/events
- There shouldn't be any events loaded, but there's one.
In order to fix this, redirect the user to the invalid page if no id nor coordinates is set as query parameters.