[red-knot] Detect version-related syntax errors (#16379)

## Summary
This PR extends version-related syntax error detection to red-knot. The
main changes here are:

1. Passing `ParseOptions` specifying a `PythonVersion` to parser calls
2. Adding a `python_version` method to the `Db` trait to make this
possible
3. Converting `UnsupportedSyntaxError`s to `Diagnostic`s
4. Updating existing mdtests  to avoid unrelated syntax errors

My initial draft of (1) and (2) in #16090 instead tried passing a
`PythonVersion` down to every parser call, but @MichaReiser suggested
the `Db` approach instead
[here](https://github.com/astral-sh/ruff/pull/16090#discussion_r1969198407),
and I think it turned out much nicer.

All of the new `python_version` methods look like this:

```rust
fn python_version(&self) -> ruff_python_ast::PythonVersion {
    Program::get(self).python_version(self)
}
```

with the exception of the `TestDb` in `ruff_db`, which hard-codes
`PythonVersion::latest()`.

## Test Plan

Existing mdtests, plus a new mdtest to see at least one of the new
diagnostics.

crates/red_knot_python_semantic/resources/mdtest/conditional/match.md

@@ -1,5 +1,10 @@
 # Pattern matching
 
+```toml
+[environment]
+python-version = "3.10"
+```
+
 ## With wildcard
 
 ```py