Former GOP strategist Ana Navarro all but begged Democrats to stop fretting about President Joe Biden’s age — especially when the alternative is former President Donald Trump. Appearing on CNN Tuesday, Navarro expressed bewilderment that Democrats always focus on the flaws of their own party’s leadership while the current GOP frontrunner is loaded with political baggage. “One of my issues is that even democrats have been fretting over Biden’s age, and you know, I look at this as a Republican and I’m just puzzled by it because I look at Donald Trump and walking around in Iowa, he looked like h…