When the user is navigating a drop down menu, they don't want the
preview window to pop over their screen. This glues between the
LIB_TREE and the frame to block these preview events
Fixes https://gitlab.com/kicad/code/kicad/-/issues/19117
Recommendation is to avoid using the year nomenclature as this
information is already encoded in the git repo. Avoids needing to
repeatly update.
Also updates AUTHORS.txt from current repo with contributor names
The search field on the Symbol Editor is focused when its window
is first opened. Similar behavior has been implemented in the search
field of the Footprint Editor with this change.
Fixes: https://gitlab.com/kicad/code/kicad/-/issues/13100
