That was a celebrated film, which makes a huge difference. The worse a film is received, or the more BTS drama, the less likely deleted scenes are to be released.
Also, Star Wars, as a franchise, is able to repurpose and retcon stories across all media very easily. It’s far more likely that deleted plot elements crop up in other media.
It’s less work, more money, and less critical blowback for them to release the OT Theatrical Cuts, or to not release the deleted scenes. The amount of fans that would love the deleted scenes is just too small a number.