MS NOW's Jen Psaki flagged President Donald Trump's increasingly noncommital and unconfident tone with Republican Senate candidates — including in states where Republicans definitely shouldn't be losing.For starters, she said, he's been repeatedly making such claims about Texas Attorney General Ken Paxton's Senate bid, saying that Paxton "can be a bit of a pain" and "I don't care" if he's here at one of his latest rallies."Nothing says 'everyone…