Attribution widget contains a safe area #2143

What is the bug?

The attribution widget contains a safe area, which causes it to be offset when shown in maps even if the map does not extend to the edge

How can we reproduce it?

1. Load a FlutterMap inside some other widget, which does not extend to the screen edge
2. Load the attribution

Do you have a potential solution?

Revert to the previous behaviour without the SafeArea.