Respect NO_PROXY env var (#33742)

Closes #22991

Release Notes:

- Added support for respecting the NO_PROXY environment variable when
any HTTP proxy is configured. For the exact NO_PROXY env var strings
that are supported, see [NoProxy in the reqwest
docs](https://docs.rs/reqwest/latest/reqwest/struct.NoProxy.html#method.from_env).

---------

Co-authored-by: Peter Tripp <peter@zed.dev>

crates/reqwest_client/src/reqwest_client.rs

@@ -61,7 +61,8 @@ impl ReqwestClient {
                 })
                 .ok()
         }) {
-            client = client.proxy(proxy);
+            // Respect NO_PROXY env var
+            client = client.proxy(proxy.no_proxy(reqwest::NoProxy::from_env()));
             client_has_proxy = true;
         } else {
             client_has_proxy = false;