#3498525 Allow entity types other than node; add feature flag module for taxonomy terms.

Dave Longrequested to merge
issue/canvas-3498525:3498525-remove-node-restrictions into 1.x

Closes #3498525

Removes the restrictions on entity types, behind a feature flag for now.

AI-Generated: Yes (Used Claude Code to plan and develop).

Testing instructions

  • Enable the canvas_dev_ct module
  • Add a content template for a taxonomy vocabulary
  • Check that a term renders with the content template (note: you might want to delete the views.view.taxonomy_term view)

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