You’re virtually guaranteed to burn your reputation among your former coworkers and ensure that the one thing they remember you for is taking a new job and giving negative one weeks of notice. Is that really worth avoiding the vanishingly small risk of a rescinded offer? Do you really think the old job wouldn’t let you keep working there if you gave 2 weeks’ notice and then rescinded your notice?
I think you’ve got your risk model backwards. If you optimize too much for rare outcomes, you start missing the bigger picture.