“Forum non conveniens is a separate determination to be made once jurisdiction simpliciter is established. The decision to raise forum non conveniens rests with the parties, not with the court seized of the claim. Once jurisdiction is established, if the defendant does not raise further objections, the litigation proceeds before the court of the forum. The burden is on the defendant to show why the court should decline to exercise its jurisdiction and displace the forum chosen by the plaintiff: Club Resorts Ltd. v. Van Breda, 2012 SCC 17, [2012] 1 S.C.R. 572, at paras. 101-3.”