[Saved Search][Modal] UI Improvements

- [x] Tab title: "Saved searches" -> "Saved Searches"

<img width="124" height="54" alt="Image" src="https://github.com/user-attachments/assets/06245bec-2688-469e-b9a4-a16fccf15bcf" />

- [x] Open button -> please use the correct icon, example from a data object grid:

<img width="106" height="171" alt="Image" src="https://github.com/user-attachments/assets/4b1fc4d0-7f28-4e9a-9cbe-fd0aecf648c2" />