[MC-258258] The "EntityTag" NBT data on armor stands is no longer applied upon placement

The NBT data that's on an armor stand (as item) won't be applied to the armor stand when it's being placed down. This was not the case in 1.19.2.

Give yourself an armor stand with some custom "EntityTag" NBT data, for example, an armor stand with "Small" set to "1b" by using the command provided below.
```
/give @s minecraft:armor_stand{EntityTag:{Small:1b}}
```
Place down the armor stand.
Take note of how the armor stand doesn't have its "Small" NBT tag set to "1b" upon being placed.

"EntityTag" NBT data of armor stands is ignored upon placement.

"EntityTag" NBT data of armor stands would not be ignored upon placement, just like in 1.19.2.

Linked issues

Still an issue on 1.19.3 RC2
To be clear though, it's not just the arms that don't work anymore, it's any EntityTag you add to the armor stand.

Confirmed. As mentioned already, this wasn't the case in 1.19.2.