fix getrandom lib

Author: aadi123

Cargo.toml

@@ -11,3 +11,4 @@ crate-type = ["cdylib"]
 wasm-bindgen = "0.2.87"
 chess = "3.2.0"
 rand = "0.8.5"
+getrandom = { version = "0.2", features = ["js"] }