Add back antechamber 2, fix collisions in inner balcony room

src/map/dungeon/scenes/Antechamber.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=60 format=4 uid="uid://dpec2lbt83dhe"]
+[gd_scene load_steps=59 format=4 uid="uid://dpec2lbt83dhe"]
 
 [ext_resource type="Script" path="res://addons/SimpleDungeons/DungeonRoom3D.gd" id="1_ho6e8"]
 [ext_resource type="Script" path="res://src/map/dungeon/code/DungeonRoom.cs" id="2_iwuh7"]
@@ -628,9 +628,6 @@ _surfaces = [{
 blend_shape_mode = 0
 shadow_mesh = SubResource("ArrayMesh_i3ffh")
 
-[sub_resource type="PlaneMesh" id="PlaneMesh_bbi7v"]
-size = Vector2(35, 30)
-
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_51rrf"]
 albedo_texture = ExtResource("20_le1vp")
 texture_filter = 0
@@ -708,13 +705,6 @@ skeleton = NodePath("")
 unique_name_in_owner = true
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 13.9078, -4.05106, -13.6796)
 
-[node name="Minimap Texture" type="MeshInstance3D" parent="Room"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.00325966, -7.7801, 0)
-visible = false
-layers = 2
-mesh = SubResource("PlaneMesh_bbi7v")
-skeleton = NodePath("../..")
-
 [node name="ItemSpawnPoints" type="Node3D" parent="Room"]
 unique_name_in_owner = true