Reset the checked state of the first radio item in wxAuiToolBar too.

Reset the checked state of the first radio item in wxAuiToolBar too.

Fix the condition of the loop in wxAuiToolBar::ToggleTool() to also uncheck
the item with index 0 that was always excluded before because of "i > 0" check
in the loop.

Also exclude the item being turned on itself from the loops, it's useless to
reset its checked state only to turn it on again below.

Closes #11110.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67742 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775