Retry on tar extraction errors (#9753)

## Summary

So the error here is:

```rust
ExtractError("cpython-3.11.11%2B20241206-aarch64-apple-darwin-install_only_stripped.tar.gz", Io(Custom { kind: UnexpectedEof, error: TarError { desc: "failed to unpack `/Users/crmarsh/.local/share/uv/python/.cache/.tmpkqFzqE/python/lib/libpython3.11.dylib`", io: Custom { kind: UnexpectedEof, error: TarError { desc: "failed to unpack `python/lib/libpython3.11.dylib` into `/Users/crmarsh/.local/share/uv/python/.cache/.tmpkqFzqE/python/lib/libpython3.11.dylib`", io: Custom { kind: UnexpectedEof, error: "unexpected end of file" } } } } }))
```

This isn't a Reqwest error, so we miss it in
`is_extended_transient_error`.

We could add `TarError` or `ExtractError` here, but... should we? This
PR just extends it to any error that has an IO source. I don't see much
of a downside.

Closes https://github.com/astral-sh/uv/issues/9747.

## Test Plan

First, ran: `uv run ./scripts/create-python-mirror.py --name cpython
--arch aarch64 --os darwin`.

Then, dropped this into `./scripts/mirror/server.py`:

```python
import os
import random
from http.server import SimpleHTTPRequestHandler, HTTPServer


class GlitchyStaticServer(SimpleHTTPRequestHandler):
    def do_GET(self):
        """Handle GET request."""
        file_path = self.translate_path(self.path)
        
        if not os.path.exists(file_path):
            self.send_error(404, "File not found")
            return
        
        try:
            with open(file_path, 'rb') as f:
                file_content = f.read()

            # Introduce an "unexpected end of file" glitch randomly
            if random.random() < 0.75:  # 75% chance of glitch
                glitch_point = random.randint(1, len(file_content) - 1)
                file_content = file_content[:glitch_point]

            self.send_response(200)
            self.send_header("Content-type", self.guess_type(file_path))
            self.send_header("Content-Length", len(file_content))
            self.end_headers()
            self.wfile.write(file_content)
        
        except Exception as e:
            self.send_error(500, f"Internal Server Error: {e}")
        

def run(server_class=HTTPServer, handler_class=GlitchyStaticServer, port=8080):
    """Run the server."""
    server_address = ('', port)
    httpd = server_class(server_address, handler_class)
    print(f"Serving on port {port} with glitchy behavior")
    httpd.serve_forever()


if __name__ == "__main__":
    run()
```

Then ran `python server.py` from that directory.

From there, ran `UV_PYTHON_INSTALL_MIRROR="http://localhost:8080" cargo
run python install 3.11 --reinstall --verbose` to reliably test retries.

crates/uv-client/src/base_client.rs

@@ -25,7 +25,7 @@ use uv_warnings::warn_user_once;
 use crate::linehaul::LineHaul;
 use crate::middleware::OfflineMiddleware;
 use crate::tls::read_identity;
-use crate::{Connectivity, WrappedReqwestError};
+use crate::Connectivity;
 
 pub const DEFAULT_RETRIES: u32 = 3;
 
@@ -458,51 +458,16 @@ impl RetryableStrategy for UvRetryableStrategy {
 pub fn is_extended_transient_error(err: &dyn Error) -> bool {
     trace!("Attempting to retry error: {err:?}");
 
-    if let Some(err) = find_source::<WrappedReqwestError>(&err) {
-        // First, look for `WrappedReqwestError`, which wraps `reqwest::Error` but doesn't always
-        // include it in the source.
-        if let Some(io) = find_source::<std::io::Error>(&err) {
-            if io.kind() == std::io::ErrorKind::ConnectionReset
-                || io.kind() == std::io::ErrorKind::UnexpectedEof
-            {
-                trace!(
-                    "Retrying error: `ConnectionReset` or `UnexpectedEof` (`WrappedReqwestError`)"
-                );
-                return true;
-            }
-            trace!("Cannot retry error: not one of `ConnectionReset` or `UnexpectedEof` (`WrappedReqwestError`)");
-        } else {
-            trace!("Cannot retry error: not an IO error (`WrappedReqwestError`)");
-        }
-    } else if let Some(err) = find_source::<reqwest_middleware::Error>(&err) {
-        // Next, look for `reqwest_middleware::Error`, which wraps `reqwest::Error`, but also
-        // includes errors from the middleware stack.
-        if let Some(io) = find_source::<std::io::Error>(&err) {
-            if io.kind() == std::io::ErrorKind::ConnectionReset
-                || io.kind() == std::io::ErrorKind::UnexpectedEof
-            {
-                trace!("Retrying error: `ConnectionReset` or `UnexpectedEof` (`reqwest_middleware::Error`)");
-                return true;
-            }
-            trace!("Cannot retry error: not one of `ConnectionReset` or `UnexpectedEof` (`reqwest_middleware::Error`)");
-        } else {
-            trace!("Cannot retry error: not an IO error (`reqwest_middleware::Error`)");
-        }
-    } else if let Some(err) = find_source::<reqwest::Error>(&err) {
-        // Finally, look for `reqwest::Error`, which is the most common error type.
-        if let Some(io) = find_source::<std::io::Error>(&err) {
-            if io.kind() == std::io::ErrorKind::ConnectionReset
-                || io.kind() == std::io::ErrorKind::UnexpectedEof
-            {
-                trace!("Retrying error: `ConnectionReset` or `UnexpectedEof` (`reqwest::Error`)");
-                return true;
-            }
-            trace!("Cannot retry error: not one of `ConnectionReset` or `UnexpectedEof` (`reqwest::Error`)");
-        } else {
-            trace!("Cannot retry error: not an IO error (`reqwest::Error`)");
+    if let Some(io) = find_source::<std::io::Error>(&err) {
+        if io.kind() == std::io::ErrorKind::ConnectionReset
+            || io.kind() == std::io::ErrorKind::UnexpectedEof
+        {
+            trace!("Retrying error: `ConnectionReset` or `UnexpectedEof`");
+            return true;
         }
+        trace!("Cannot retry error: not one of `ConnectionReset` or `UnexpectedEof`");
     } else {
-        trace!("Cannot retry error: not a reqwest error");
+        trace!("Cannot retry error: not an IO error");
     }
 
     false