Make float timeout consistent with tuple timeout in HTTPXTransport

Both paths now only set connect and read timeouts, matching
requests behavior. Previously the float path also set write and
pool timeouts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: adamtheturtle

src/vws/transports.py

@@ -128,7 +128,12 @@ def __call__(
                 pool=None,
             )
         else:
-            httpx_timeout = httpx.Timeout(timeout=timeout)
+            httpx_timeout = httpx.Timeout(
+                connect=timeout,
+                read=timeout,
+                write=None,
+                pool=None,
+            )
 
         httpx_response = httpx.request(
             method=method,