sc: fix number format button highlighting in sidebar
sc: fix number format button highlighting in sidebar

When a number format for a cell (for example percent) is applied
it is highlighted in the toolbar but not the equal button in the
sidebar. This patch fixes this issue.

Change-Id: I7f33ab1e989f8a8e3c49468aae2042621d088798

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core