BUG #14961: Fix pqDisplayColorWidget bug.

Fixed pqDisplayColorWidget to not accidentally override the
ServerManager state when the UI is being setup. The bug was arising
because the current component number was being shown in the UI, it acted
same as if the user changed the component number.

Change-Id: I4d0c54995b7e4f9c8350d343a2c9e7fd40d5a400
Merge topic '14961_fix_color_widget' into next

ff83b782 BUG #14961: Fix pqDisplayColorWidget bug.