Bind fetch and stream in JS client

.changeset/shaky-numbers-punch.md

@@ -0,0 +1,6 @@
+---
+"@gradio/client": patch
+"gradio": patch
+---
+
+fix:Bind `fetch` and `stream` in JS client

client/js/src/client.ts

@@ -142,6 +142,8 @@ export class Client {
 		this.resolve_cookies = resolve_cookies.bind(this);
 		this.upload = upload.bind(this);
 		this.handle_space_success = this.handle_space_success.bind(this);
+		this.fetch = this.fetch.bind(this);
+		this.stream = this.stream.bind(this);
 	}
 
 	private async init(): Promise<void> {