Charles Esten performed at the same venue where his former “Nashville” co-star Hayden Panettiere died, just days before her passing. The actor shared the “strange coincidence” in his Instagram tribute to the late 36-year-old on Monday. He noted that his show was “not only in Greenville, South Carolina,” where Panettiere died of an apparent overdose Sunday, but in the exact same location. “We were actually in Judson Mills, itself (where the [Foundry] venue is located),” Esten explained. “Alongside the horrific news of her passing, [my wife, Patty Hanson, and I] have both been stunned to hear in news reports that Hayden had apparently…