Automatically retry body errors when processing response (#9213)

## Summary

The reqwest middleware doesn't retry errors that occur "after" the
request completes -- but in some cases, these do include spurious errors
that we want to retry. See https://github.com/astral-sh/uv/issues/8144
for examples. This PR adds a second retry layer during the response
_handler_, which should help with some of the spurious failures we see
in the linked issue.

Closes https://github.com/astral-sh/uv/issues/8144.

crates/uv-resolver/src/lib.rs

@@ -32,9 +32,7 @@ pub use yanks::AllowedYanks;
 /// `ConflictItemRef`. i.e., We can avoid allocs on lookups.
 type FxHashbrownSet<T> = hashbrown::HashSet<T, rustc_hash::FxBuildHasher>;
 
-mod bare;
 mod candidate_selector;
-
 mod dependency_mode;
 mod dependency_provider;
 mod error;