Don't log error from wxMSW wxWakeUpIdle().

This is not necessary as there is nothing that can be done about this error
anyhow and the function still "works" even if it occurs (it doesn't wake up
anything but it is not necessary to do it if the message queue is already
full) and, worse, results in a crash due to stack overflow.

Closes #15951.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75834 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775