Remove usage of List in InsertBookmarkAsPage_FindDuplicateLayouts.
Remove usage of List in InsertBookmarkAsPage_FindDuplicateLayouts.

Use vector<rtl::OUString> instead of deprecated List class.

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