Add a CanTeleport tag / data component to control mob teleportation

This proposed tag {CanTeleport:0b} or data component [can_teleport=true/false] would disable the mob's ability to teleport.

Currently, mapmakers face a frustrating limitation: even when using the {NoAI:1b} tag, mobs like Endermen and Shulkers will still hard-teleport away if they take damage or are targeted by projectiles. This makes it incredibly difficult to utilize these mobs for their other unique gameplay mechanics without having to factor in their teleporting abilities.

Adding a universal feature (defaulting to 1b for tags or true for data components) would cleanly solve this issue while not impacting traditional survival gameplay. Endermen will stop reactive/projectile and random idle teleports, Shulkers will be permanently locked to their assigned coordinates, and future mobs that possess the ability to teleport will have this feature as well.

This addition fits perfectly alongside existing tags like {NoGravity} and data components, giving the technical and mapmaking community a vital tool for sandbox customization.