`manual_unwrap_or` is not showing for simple ref cases

Summary

This case is not detected. I suspect this is due to the initial fix for #7228 (?).

Lint Name

manual_unwrap_or

Reproducer

I tried this code:

fn test_func(val: Option<&str>) -> String {
    let s = match val {
        None => "",
        Some(v) => v,
    };
    s.to_string()
}

I expected to see this happen: a warning to simplify the match statement to use unwrap_or

Instead, this happened: no warnings

Version

rustc 1.73.0 (cc66ad468 2023-10-03)
binary: rustc
commit-hash: cc66ad468955717ab92600c770da8c1601a4ff33
commit-date: 2023-10-03
host: x86_64-unknown-linux-gnu
release: 1.73.0
LLVM version: 17.0.2

Start by locating the manual_unwrap_or lint and reproduce the Rust example from this issue. Check why the simple Option<&str> match is not recognized, then add coverage for the example and verify that Clippy emits the expected unwrap_or warning.