fix: hardcode keyspace value to "vault" in init_session function

wasm_app/src/vault_bindings.rs

@@ -26,7 +26,7 @@ pub use vault::session_singleton::SESSION_MANAGER;
 pub async fn init_session(keyspace: &str, password: &str) -> Result<(), JsValue> {
     let keyspace = keyspace.to_string();
     let password_vec = password.as_bytes().to_vec();
-    match WasmStore::open(&keyspace).await {
+    match WasmStore::open("vault").await {
         Ok(store) => {
             let vault = vault::Vault::new(store);
             let mut manager = SessionManager::new(vault);