Move the remaining tests to C++ and also enable/fix #i84671 by creating
test cases for ScTableSheetObj.

Change-Id: I9412fe7a1947b9afb4343a8f5726eccf9ea371a3
Reviewed-on: https://gerrit.libreoffice.org/55657Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jens Carl <j.carl43@gmx.de>