Fix facet add/remove when schema also belongs to primary type or other facet

The content randomly disappears when the Picture facet is added in an event handler trigger by the document created event

the facet is added with the following automation chain:

- Context.FetchDocument
- RunScript:
    script: "Document.addFacet(\"Picture\");\nDocument.doc.putContextData(\"forceViewsGeneration\",true);\n"
- Document.Save

Attached is the corresponding studio project jar (requires the DAM MP)

To reproduce, just drag&drop several image files from the UI.