ANN401 induces a stack overflow on quoted quoted escape sequences

[`any-type` (ANN401)](https://docs.astral.sh/ruff/rules/any-type/) overflows the stack in Ruff 0.6.4 through Ruff 0.8.1 for a quoted annotation with an extra layer of quotation marks containing an escape sequence.

```console
$ cat ann401.py
def f(x: "'in\x74'"): pass

$ ruff check --isolated --select ANN401 ann401.py

thread 'main' has overflowed its stack
fatal runtime error: stack overflow
```