fix: android build & CONFIG deadlock

libs/hbb_common/src/config.rs

@@ -584,6 +584,17 @@ impl Config {
         config.store();
     }
 
+    pub fn get_sk_uuid() -> Vec<u8> {
+        // for uuid, avoid deadlock
+        let mut config = Config::load_::<Config>("");
+        if config.key_pair.0.is_empty() {
+            let (pk, sk) = sign::gen_keypair();
+            config.key_pair = (sk.0.to_vec(), pk.0.into());
+            Config::store_(&config, "");
+        }
+        config.key_pair.1
+    }
+
     pub fn get_key_pair() -> (Vec<u8>, Vec<u8>) {
         // lock here to make sure no gen_keypair more than once
         let mut config = CONFIG.write().unwrap();