Fix: drop pollster in lieu of std::sync::mpsc

packages/desktop/Cargo.toml

@@ -48,7 +48,6 @@ tao = { workspace = true, features = ["rwh_05"] }
 dioxus-history = { workspace = true }
 base64 = { workspace = true }
 libc = "0.2.174"
-pollster = "0.4.0"
 rand = { workspace = true, features = ["std_rng"] }
 subtle = { version = "2.6", features = ["const-generics"] }
 webbrowser = { version = "1.0" }