While the slow hoisting of President Joe Biden on his own malfunctioning petard has consumed most of the news in the election cycle lately, there are two looming matters on the agenda that don’t involve the president’s slow self-immolation tour: the Republican National Convention in Milwaukee next week and the matter of former President Donald Trump’s veepstakes. It’s enough, in fact, that news outlets and social media users alike jumped as Trump hinted — or “teases,” to use NBC News’ verbiage, because I guess they couldn’t work “pounces” in there somehow — he might reveal his chosen running…