dont backup wallets outside of wallets folder

src/main/java/com/sparrowwallet/sparrow/io/Storage.java

@@ -219,8 +219,10 @@ public class Storage {
     }
 
     public void backupWallet() throws IOException {
+        if(walletFile.toPath().startsWith(getWalletsDir().toPath())) {
             backupWallet(null);
         }
+    }
 
     public void backupTempWallet() {
         try {