mypy

b3a102ef - Fix `RawExpressionType.accept` crash with `--cache-fine-grained` (#17588)

Fix `RawExpressionType.accept` crash with `--cache-fine-grained` (#17588) Commit 1072c78ad375b7f0511549287f54432050396717 (#17148) converted all quoted types into `RawExpressionType`, which raised an `AssertionError` when `accept`ing a `TypeTriggersVisitor`. - Fixes #17574. - Fixes #17587. Signed-off-by: Anders Kaseorg <andersk@mit.edu>