More Lectern Variants

1.9.0:

• 1.21.4⁺: Fix books not dropping when breaking a Lectern
• 1.21.6⁺: Fix books not being able to be read on Lecterns

  ⚠ NOTE:

  Any books placed on Lectern variants before this update will be removed/deleted!
  Please make sure to remove them before updating, and place them back after updating.
  This only affects versions 1.21.4 and newer.

Looking for changes of previous versions?
You can find them in the changelog history/CHANGELOG_history.md).