refactor(electrum_ext): rename scan_without_keychain to sync and scan to full_scan

removed txids and outpoints params from full_scan

example-crates/wallet_electrum/src/main.rs

@@ -61,7 +61,7 @@ fn main() -> Result<(), anyhow::Error> {
             relevant_txids,
         },
         keychain_update,
-    ) = client.scan(prev_tip, keychain_spks, None, None, STOP_GAP, BATCH_SIZE)?;
+    ) = client.full_scan(prev_tip, keychain_spks, STOP_GAP, BATCH_SIZE)?;
 
     println!();