[MC-112744] Team NBT tag only exists for EntityLivingBase entities and not for all

The bug

The Team tag makes an entity directly join a team once its NBT data is read. As all entities can be in a team this tag should exist for all entities and not only for the ones extending EntityLivingBase.

How to reproduce

Create a team
```
/team add testTeam
```

Summon the following entities

/summon armor_stand ~ ~ ~ {Team:"testTeam"}
/summon minecart ~ ~ ~ {Team:"testTeam"}

Run the following command
```
/team list testTeam
```
→ It only shows the armor stand
Run the following command and repeat the previous step
```
/team join testTeam @e[type=minecart,limit=1]
```
→ Now the minecart is listed as well