Fix OAuth login redirect target

app.py

@@ -912,10 +912,10 @@ def main() -> None:
                 "elem_id": "canis-hf-login",
             }
             if "link_target" in inspect.signature(gr.LoginButton.__init__).parameters:
-                login_kwargs["link_target"] = "_top"
+                login_kwargs["link_target"] = "_blank"
             login_button = gr.LoginButton(**login_kwargs)
             if hasattr(login_button, "link_target"):
-                login_button.link_target = "_top"
+                login_button.link_target = "_blank"
             auth_gate.__exit__(None, None, None)
 
             # Keep every private-demo component inside an OAuth-gated shell.