Jennie Garth will always have a “connection” with Shannen Doherty. The 52-year-old actress starred alongside Shannen – who died earlier this month at the age of 53 following a long battle with cancer – on ‘Beverly Hills, 90210’ in the 1990s and admitted that she and her former castmates have just been trying to “support” each other amid the tragic news. She told People: “People don’t, I think, fully understand it when you experience life-changing events like that for so long together during your formative years, you have a connection that can never ever be broken by an argument, or a death, or…