Right now when the Reload action is selected from a right-click context
menu, Servo would panic. Context menu's Reload action was calling
`Location.Reload()`, which caused the panic. As per [HTML
spec](https://html.spec.whatwg.org/multipage/#dom-location-reload) it
looks like, to perform a user-requested reload we should be using
`reload_without_origin_check()` instead.
Testing: Added a test for `ContextMenuAction::Relaod` action.
Signed-off-by: atbrakhi <atbrakhi@igalia.com>