Context for Getting Document Parent ID in Custom Property Editors (Block Grid Blocks)

Questions
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2

Okay, so Retrieving ID/Unique of the current pages parent clarifies the issue with e.g. UMB_DOCUMENT_WORKSPACE_CONTEXT. I did not see this post until after I published mine.

However, it has now become more clear that my issues are:

  1. Getting parent node ID from unpublished content. The suggested workaround in the linked issue does not work for me in that case
  2. Getting parent node ID when property editor lives inside of a block grid block