only subscribe scopes to signals when rendering

packages/hooks/Cargo.toml

@@ -28,3 +28,4 @@ futures-util = { workspace = true, default-features = false }
 dioxus-core = { workspace = true }
 dioxus = { workspace = true }
 web-sys = { version = "0.3.64", features = ["Document", "Window", "Element"] }
+tokio = { version = "1.0", features = ["full"] }