Bug : Mobile navbar does not close when clicking outside

[historictors]

While using the website, I noticed that when a user opens the mobile navbar,
it does not close when clicking anywhere outside the menu (i.e., on the body).

Expected behavior:

• When the navbar is open and the user taps outside the menu, the navbar should automatically close.

Actual behavior:

• The navbar stays open even when the user clicks/taps on the body or empty space.
• This results in a poor user experience and blocks the view of the page content.

This fix adds an event listener that closes the navbar when clicking outside,
ensuring proper mobile navigation behavior.

[abhishekdam]

#186 is already mentioning this bug so you can close this ticket and link you pr to that ticket.