@charlieinns well, one out of two: the devs incorrectly wrote "included in the Celebration Edition" instead of "unlocked via events" (just like when the BB units emotes said "unlocked via crates" instead of "unlocked via milestones") or they changed their minds about them being unlocked via events only so those emotes should actually be unlocked with the Celebration Edition too. I think the best way to understand which is the case here, is by checking other cosmetics which are unlocked via events. I would do that myself but I don't own the CE.
Use this list:
-Princess skin (Leia)
-Farmboy skin (Luke)
-5th victory pose (Maul, Kenobi, Yoda and Grievous)
-5th voice line (Maul, Kenobi and Yoda)
-6th voice line (Grievous)
Check if there's at least one of those unlocked. @RogueZeroRendar is right though. The Celebration Edition was meant to unlock all the content (up to The Rise of Skywalker update) that you can buy with Credits or Crystals only.
