Let the map fill the screen on the map dashboard (#54263)

* Let the map fill the screen on the map dashboard

A map in a panel view stopped at the safe area, leaving a strip of empty
card beside it, and the drawer stopped there too. Map tiles carry no text
to read, so the map and the drawer now run to the edges of the screen,
while everything that is read or tapped stays inside the safe area: the
drawer's content, the card's buttons, and the map's own controls, which
already had insets for the drawer and now take the safe area as well.

The view container exposes the insets it applies as custom properties so
the card can cancel exactly those, and the bottom sheet takes its side
insets from properties that default to the safe area.

* Address review on the map full bleed