Prevent System Glitch to ride another entities (part of #87)

base/src/main/kotlin/dev/nathanpb/dml/entity/SystemGlitchEntity.kt

@@ -96,7 +96,7 @@ class SystemGlitchEntity(type: EntityType<out HostileEntity>, world: World) : Ho
     override fun tick() {
         super.tick()
         if (tier == null && belongsToTrial) {
-            remove(Entity.RemovalReason.DISCARDED)
+            remove(RemovalReason.DISCARDED)
         }
     }
 
@@ -121,7 +121,7 @@ class SystemGlitchEntity(type: EntityType<out HostileEntity>, world: World) : Ho
      * In that case, the entity will attempt to teleport maximum [maxAttempts] times checking if the random picked block is inside its [trial] area
      * And successfully teleports if it does
      *
-     * If the config entry "trial.allowPlayersLeavingArena" is set to true, than it will completely
+     * If the config entry "trial.allowPlayersLeavingArena" is set to true, then it will completely
      * ignore the protections and just teleport the entity
      *
      * @param at The initial block to find random ones around
@@ -157,6 +157,10 @@ class SystemGlitchEntity(type: EntityType<out HostileEntity>, world: World) : Ho
         ) 1F else super.getDropChance(slot)
     }
 
+    override fun canStartRiding(entity: Entity?): Boolean {
+        return false
+    }
+
     override fun writeCustomDataToNbt(tag: NbtCompound?) {
         super.writeCustomDataToNbt(tag)
         tag?.putBoolean("${MOD_ID}.belongsToTrial", belongsToTrial)