Add Accept-Encoding: identity to remaining stream paths (#2321)

## Summary

Like #2319, there are a few other places where we attempt to stream a
file.

crates/uv-distribution/src/distribution_database.rs

@@ -259,6 +259,13 @@ impl<'a, Context: BuildContext + Send + Sync> DistributionDatabase<'a, Context>
                     .cached_client()
                     .uncached()
                     .get(wheel.url.raw().clone())
+                    .header(
+                        // `reqwest` defaults to accepting compressed responses.
+                        // Specify identity encoding to get consistent .whl downloading
+                        // behavior from servers. ref: https://github.com/pypa/pip/pull/1688
+                        "accept-encoding",
+                        reqwest::header::HeaderValue::from_static("identity"),
+                    )
                     .build()?;
                 let cache_control = match self.client.connectivity() {
                     Connectivity::Online => CacheControl::from(