Delete profiles before overwriting

src/window/profile.rs

@@ -65,6 +65,7 @@ impl ProfileWindow {
             .save_file();
         if let Some(path) = file {
             let bytes = pollster::block_on(bytes_receiver)?;
+            let _ = fs::remove_file(&path);
             fs::write(&path, bytes)?;
             Ok(Some(path.display().to_string()))
         } else {