Syntax check for await within non-async function is missing some conditions

[erictraut]

The four lines below should all be flagged as syntax errors, but only two of them are:

from typing import Any

def foo() -> Any: ...

def should_error():
    [x async for x in foo()]
    {k: v async for k, v in foo()}
    (x for x in await foo())
    [await x for x in foo()]

This comes from the mypy issue tracker: python/mypy#18124

[erictraut]

This is addressed in pyright 1.1.389