A West Hollywood nonprofit that counts “The Big Short” director Adam McKay on its board — and was founded by scions of two of America’s most storied families — is doling out hundreds of thousands of dollars to bankroll the social-justice revolution roiling the country. Climate Emergency Fund has financial ties to anti-ICE initiatives in Minnesota, including a group of protestors who stormed a church service last month with former CNN host Don Lemon, The Post has learned. Since its founding in