Revert "Normalizes the KDP value for undefined and null attributes to be empty strings"
Revert "Normalizes the KDP value for undefined and null attributes to be empty strings"

This reverts commit 213fb7189d8b7ac5c78eb7cdc1af8f8bf1ffdac4.

bordar/mwEmbed,omridevk/mwEmbed,DBezemer/mwEmbed,joanpuigsanz/mwEmbed,vladm3/mwEmbed,FlixMaster/mwEmbed,bordar/mwEmbed,panda-os/mwEmbed,joanpuigsanz/mwEmbed,joanpuigsanz/mwEmbed,SVSG/mwEmbed,slash851/mwEmbed,panda-os/mwEmbed,SVSG/mwEmbed,matsuu/mwEmbed,kaltura/mwEmbed,FlixMaster/mwEmbed,FlixMaster/mwEmbed,alexmilk/mwEmbed,SVSG/mwEmbed,slash851/mwEmbed,kaltura/mwEmbed,vladm3/mwEmbed,abaylis/mwEmbed,omridevk/mwEmbed,bordar/mwEmbed,tanyaLibatter/mwEmbed,bordar/mwEmbed,abaylis/mwEmbed,vladm3/mwEmbed,FlixMaster/mwEmbed,alexmilk/mwEmbed,slash851/mwEmbed,vladm3/mwEmbed,abaylis/mwEmbed,safarijv/mwEmbed,tanyaLibatter/mwEmbed,slash851/mwEmbed,panda-os/mwEmbed,safarijv/mwEmbed,safarijv/mwEmbed,DBezemer/mwEmbed,omridevk/mwEmbed,DBezemer/mwEmbed,tanyaLibatter/mwEmbed,joanpuigsanz/mwEmbed,omridevk/mwEmbed,matsuu/mwEmbed,kaltura/mwEmbed,DBezemer/mwEmbed,tanyaLibatter/mwEmbed,panda-os/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,matsuu/mwEmbed,safarijv/mwEmbed,alexmilk/mwEmbed,matsuu/mwEmbed,abaylis/mwEmbed,SVSG/mwEmbed