This restores vanilla behavior of allowing placed chests to retain any Block Entity Tag data.
Upstream added filtering to chests, breaking vanilla behavior, and preventing use of loot table chests as a reward mechanism.
Upon review, we can find no security risk in allowing players to place a chest with NBT data, as Spawn Eggs, Minecarts, command blocks etc all have their own checks.
Additionally, survival mode players, non op players can not create these items anyways. If a player has Creative or Op, they already have high levels of access.
Plus, Chests aren't the only inventory that could have free form items, so this filter was insufficient anyways.
BillyGalbreath