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 admin app and first reproduce how clicking outside it closes the form and loses entered information. Add the requested CLOSE control while preserving filled data, then verify both the close-button behavior and accidental outside-click behavior.

Written by the indexing model from the issue text.