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.

Locate the Add restaurant overlay in the JavaScript frontend and reproduce the data-loss behavior by clicking outside it after entering information. Add a visible CLOSE button, keep the entered information safe when the overlay is dismissed, and verify both dismissal paths manually.

Written by the indexing model from the issue text.