pop function
Navigates back to the previous screen.
The Pop
function checks if there is a previous screen in the navigation stack.
If there is, it pops the current screen and navigates back to the previous screen.
If there isn't, it does nothing.
context
: The context of the current screen.
Implementation
void pop(BuildContext context) {
Navigator.canPop(context) ? Navigator.pop(context) : null;
}