feat: update request handling to match Cloudflare's WebSocket example

- Modified the request processing logic to construct internal URLs for WebSocket connections, aligning with Cloudflare's container WebSocket example.
- Ensured that the request method and headers are preserved in the new internal request format.

Author: acoyfellow

worker/effect/services.ts

@@ -875,7 +875,16 @@ const ContainerRuntimeLive = Layer.effect(
               headers.set('X-User', input.username);
               headers.set('X-Session-Id', input.sessionId);
               headers.set('X-Tab-Id', input.tabId);
-              return ready.container.fetch(new Request(input.request, { headers }));
+              // Match Cloudflare's container WebSocket example: synthetic http://host (not the browser's https worker URL).
+              // https://developers.cloudflare.com/containers/examples/websocket/
+              const u = new URL(input.request.url);
+              const internal = new URL(`${u.pathname}${u.search}`, 'http://localhost:8080');
+              return ready.container.fetch(
+                new Request(internal, {
+                  method: input.request.method,
+                  headers,
+                })
+              );
             },
             catch: toContainerFailure('Container error, please retry in a moment.', true),
           })