PEP 709: Crash with lambda + nested scope

class a:
    def a():
        class a:
            [(lambda : (a := a[(a := 2)])[b]) for b in (lambda b, a: 7)[a]]
            [][2] = b
            (1)[lambda a: a] = 4
            (2)[2] = b = a
        (4)[lambda b, a: b] = a = lambda : 1