WASHINGTON — A Marine Force Reconnaissance soldier who served eight tours in Afghanistan told The Post Friday that some locals who fought the Taliban were “disloyal” to the US forces they partnered with — and that it “happens a lot more than people suspect.” Chad Robichaux, 50, in an exclusive interview noted that said he’s been sounding the alarm about the risk of Afghan evacuees ever since the Biden administration’s botched bugout from the Middle East nation in 2021 — and how the US faces an