Tapping the toolbar save button while the save dialog is open triggers a save
because of the accesskey. It shouldn't save on a double-tap, because that's
easy to accidentally do / trigger on a slow device.
Bug: T230816
Depends-On: I4c3afce9d57c9bca737272b40b9a4862b5794bac
Change-Id: I1925b1b97de6a811f73196b616ec09a2c30c336f