An NBC report claims Donald Trump’s early Republican primary foe has pledged to help fundraise for the presumptive nominee — but he is so far only letting select supporters know. Florida Gov. Ron DeSantis, who doesn’t have an election in 2024, told donors at a private retreat Saturday that he intends to help Trump, whose campaign is blowing through cash as he uses donations to pay for mounting legal fees. One insider confirmed, “He did say it in front of a group of people at the Hard Rock.” However, they downplayed the involvement, saying that DeSantis has pledged to support all Republicans on…