As much as I want this to be true, this is straight up misinformation at this moment.
The poll they are referencing is this one: https://pro.morningconsult.com/trackers/2024-presidential-election-polling (Archive link)
Under “In this tracker”
KEY TAKEAWAYS
Trump maintains lead: Trump continues to lead Biden by 2 percentage points, 44% to 42%, unchanged from the previous week and superior to his standing in the lead-up to the first 2024 presidential debate, when the candidates were tied. The latest data was collected Friday through Sunday, meaning most responses were gathered before Saturday’s assassination attempt on Trump at a campaign rally in Pennsylvania.
I don’t see any polls listed out here either that have been able to do a complete poll since the assassination attempt:
https://www.realclearpolling.com/polls/president/general/2024/trump-vs-biden
It is disinformation. The data from the poll they are referencing was mostly completed before the assassination attempt: https://pro.morningconsult.com/trackers/2024-presidential-election-polling (Archive Link)