SmShowSymbol handles font/fg/bg settings by itself, so make
ApplySettings noop there.

This partially reverts commit b010e407

Reviewed-on: https://gerrit.libreoffice.org/17288Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit 94ceda8b)

squashed commit from László Németh <laszlo.nemeth@collabora.com>

tdf#92600 fix missing font preview in character set widget

The previous fix for tdf#92600 (missing bold text in dialogs)
brought back the regression in the special character set
widget: the characters show always the default font
of the Control class instead of the chosen font, see in
the Insert->Special Character... dialog window of Writer.

Change-Id: Ib5074684ef1277d9b9b4646bd73dce4cbff3943e
2bdc2300f481dd680877f84ea2a717b9e749c64c
Reviewed-on: https://gerrit.libreoffice.org/17303Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>