fdo#75256 Update sifr icontheme

Modify the align buttons left, center, right block for better visuabiliy,
new vertical align icons, increment- and decrementintent

Change-Id: I5761272282bf586815bc1b7f2c85f1f0065d7fbc
Reviewed-on: https://gerrit.libreoffice.org/12476
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>