Josh Radnor revealed the “How I Met Your Mother” cast is “not even a little bit” close anymore. “I don’t mean that in any dramatic way,” the actor said on Sunday’s episode of the “Half the Picture” podcast, before divulging where he stands with each of his former co-stars. Radnor explained that in March, he had Neil Patrick Harris on his “HIMYM” rewatch podcast and they had “an interesting conversation about the some of the tension” they had on the set of the hit sitcom. Radnor said he and Jason Segel “send each other texts every once in a while,” but noted he hasn’t seen the “Shrinking” star “in a really long time.” The 52-year-old…