There was already a possible hint of this power boost in ANXM when beast and others were wondering how Cyke's team found the newly awkened mutants before them so I think that this has something to do with power adjustment. Either emma has increased TP that allow her to sense these new mutants all around the world without cerebro or precog abilities that allow her to see before hand when a new mutant is about to manifest. Or maybe Cyke (who was host to full PF) or all of the PF5 can now just sense new mutants whenever and wherever they might appear
Don't mess with the X-Men!!!