Lack of close button on Add restaurant overlay (Enatega multivendor admin app)

Is your feature request related to a problem? Please describe.
Add restaurant overlay gets closed when a user clicks outside the overlay. This can be by mistake but the user looses all the filled-in infos.

Describe the solution you'd like
Provide CLOSE button on the overlay, instead of closing it by the click outside the overlay.

Add.restaurant.mov
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

Start by locating the Add restaurant overlay in the admin app and reproduce its current outside-click dismissal behavior. Add a visible close control while preserving the entered form data until that control is used, and verify the overlay no longer closes accidentally when clicking outside it.

Written by the indexing model from the issue text.