fix(torln-openmls-wasm): add getrandom js feature for wasm32 target

Author: tyeongkim

torln-openmls-wasm/Cargo.toml

@@ -29,6 +29,8 @@ tls_codec = { workspace = true }
 # code size when deploying.
 console_error_panic_hook = { version = "0.1.7", optional = true }
 js-sys = "0.3.68"
+# ALG: enable getrandom js backend for wasm32-unknown-unknown target (author: TK)
+getrandom_old = { package = "getrandom", version = "0.2", features = ["js"] }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3.34"