Airectly call signal handler

[gadomski]

What I am changing

• Not super-imporant I don't think, but it feels better to use call1 instead of run_bound on some Python code.

How you can test it

• maturin develop -m python/Cargo.toml --uv && cql2 then hit ctrl-C

[gadomski]

The size difference isn't that big, and for a non-performance-critical repo like this one I think it's ok to let this one slide.

  --> src/error.rs:5:1
   |
5  | / pub enum Error {
6  | |     /// [geojson::Error]
7  | |     #[error(transparent)]
8  | |     GeoJSON(#[from] geojson::Error),
   | |     ------------------------------- the largest variant contains at least 320 bytes
...  |
66 | |     Validation(serde_json::Value),
   | |     ----------------------------- the second-largest variant contains at least 72 bytes
67 | | }
   | |_^ the entire enum is at least 320 bytes
   |

[kylebarron]

Agree that calling Python methods is better than running a Python string