gtk4: redo theme unwanted active tab in overflow notebook into invisiblity

don't quite see why this doesn't work out of the box in gtk4, but
putting it into the application-level style provider and using it via a
style class works and probably makes more sense anyway.

Change-Id: I4de196e462d7440174a0d67be25923bddab68197
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/117337
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

0 files changed, 0 insertions, 0 deletions