Alex Waygood a57e291311 [ty] Add hint about resolved Python version when a user attempts to import a member added on a newer version (#21615) ...

## Summary

Fixes https://github.com/astral-sh/ty/issues/1620. #20909 added hints if
you do something like this and your Python version is set to 3.10 or
lower:

```py
import typing

typing.LiteralString
```

And we also have hints if you try to do something like this and your
Python version is set too low:

```py
from stdlib_module import new_submodule
```

But we don't currently have any subdiagnostic hint if you do something
like _this_ and your Python version is set too low:

```py
from typing import LiteralString
```

This PR adds that hint!

## Test Plan

snapshots

---------

Co-authored-by: Aria Desires <aria.desires@gmail.com>

2025-11-24 15:12:01 +00:00

..

cli

[ty] Add hint about resolved Python version when a user attempts to import a member added on a newer version (#21615)

2025-11-24 15:12:01 +00:00

file_watching.rs

[ty] Improve error messages for unresolved attribute diagnostics (#20963)

2025-10-19 10:58:25 +01:00