Refactor incompatiblity tracking for distributions (#1298)

Extends the "compatibility" types introduced in #1293 to apply to source
distributions as well as wheels.

- We now track the most-relevant incompatible source distribution
- Exclude newer, Python requirements, and yanked versions are all
tracked as incompatibilities in the new model (this lets us remove
`DistMetadata`!)

crates/uv-dev/src/install_many.rs

@@ -122,6 +122,7 @@ async fn install_chunk(
         venv.interpreter(),
         &FlatIndex::default(),
         &NoBinary::None,
+        &NoBuild::None,
     )
     .resolve_stream(requirements)
     .collect()