Moves all of the find dialog control out of the selection tool similar
to the schematic editor. Dialog is also non-modal now to match the
schematic editor.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/8966
This is hidden behind an advanced configuration setting and is primarily
useful for developers trying to troubleshoot the netlist payload sent
from the board editor to the schematic editor.
Fixes https://gitlab.com/kicad/code/kicad/issues/8051