Describe the Bug

Minimal repro:

class ThemeStack:
    def __init__(self) -> None:
        self._entries: list[dict[str, str]] = [{}]
        self.get = self._entries[
            -1
        ].get  # pyrefly FP: Attribute `get` cannot depend on type variable `_T`

The error does not make much sense to me: self._entries has an explicit annotation and therefore self._entries[-1] should have a concrete dict type. Its get method shouldn't involve any typevar.

Sandbox Link

https://pyrefly.org/sandbox/?project=N4IgZglgNgpgziAXKOBDAdgEwEYHsAeAdAA4CeSIAxlKnHAAQAqAFjALYwDKALqpQNaIAOunpj6mGGHoB9GRHQRucgBRwYUMAEp6AWgB89AHK50MYaPFX1mwjJjpuAJwjxE9KBDjcA2pgiUvt5OADT0wQC6EfQAvPQ%2BwAC%2BESJW1hpghADmMNyx4Rl2Ds6ucD6paZW6AIwVlRHZuWIAxPRkTlJQpPQAYgAK7gCC3CXYAK7cMPQABjnc0-SUGOi4eZLEDpj0pvTcpBv0AG6oLqjYsDMyjNMgISAT0HAk5IggrQCq3NBK3WBj6IEIKY4CIRJJpGBcE42KhlOgxmxsDAnCp8O4FNwdAZws4LFYOtwxk5RGAhCAjAikU53MB8IkySJbiB2p1SIRuLg2FAKK0%2BqQOmAuuEMDgCItTJAskTYUD0IQRK1ODApswRsQ4IgAPSalmCtlQrKahyazC4ShwTWUCUQKVOGWmTX0SFOeioY7QM4XK3oSXSr47XDEf3oJ4iMjcZimXSHZFwWX5MkAZkI1QATAz0CBEnc%2BF8Yz1oDAKGgsHgiGQs0A

(Only applicable for extension issues) IDE Information

No response