Describe the Bug

This code produces an invalid-yield error:

c = lambda: (yield 1)
print(list(c()))

ERROR Invalid `yield` outside of a function [invalid-yield]
 --> y.py:1:14
  |
1 | c = lambda: (yield 1)
  |              ^^^^^^^
  |
 INFO 1 error

The code runs fine:

$ python y.py 
[1]

Version info

pyrefly 0.28.1

Sandbox Link

https://pyrefly.org/sandbox/?project=N4IgZglgNgpgziAXKOBDAdgEwEYHsAeAdAA4CeSIAxgAQC81UqAttpqotQBSkQxSbUAjAEoAOumIAnCOgAunKBDjzKnYepAAaEAFdZ0OCXKIQAYmoBVfYtmlqYHekr7c6OOPGYYYe7klNUWQB9dB0WGElOfA4ZWWFqAFoAPmplSURxaizqSRhZHUl0e1EQADkw7AiOYHwAXxLxLRAyXLAoUkJZXCYoCnMABVJW9tSMHAJqSldIAHMCwIhXQnFzAGUYGGoAC1lZYjhEAHpDlu92wj8Zw5h0Q8xcSjhDqfRZ%2BZdb30lqVAA3VGgqGwsEm0wgc0kC1c1FwxA%2BhnEZFkW1cCV%2BETgiyK9BKAGZCIIAEwNdAgWraVDOCDogBi0BgFDQWDwRDIZKAA

(Only applicable for extension issues) IDE Information

No response