Fix uid conflict in example ball scenes

Godot 4.4 warns about UID conflicts between these scenes. It seems the
scene was copied on the filesystem rather than using the editor's save
as functionality, which generates new UIDs. This is also how pong
started using the spawner ball scene. Likely the spawner example should
just use the pong ball scene, but this makes them independent.

addons/block_code/examples/pong_game/ball.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=5 format=3 uid="uid://c7l70grmkauij"]
+[gd_scene load_steps=4 format=3 uid="uid://c7l70grmkauij"]
 
 [ext_resource type="Texture2D" uid="uid://bcgr5amsq3jfl" path="res://addons/block_code/examples/pong_game/assets/ball.png" id="2_xkrmm"]
 
@@ -14,8 +14,8 @@ collision_layer = 2
 collision_mask = 15
 physics_material_override = SubResource("PhysicsMaterial_c3m63")
 continuous_cd = 1
-max_contacts_reported = 1
 contact_monitor = true
+max_contacts_reported = 1
 linear_velocity = Vector2(353.553, 353.553)
 linear_damp_mode = 1
 angular_damp_mode = 1

addons/block_code/examples/pong_game/pong_game.tscn

@@ -9,7 +9,7 @@
 [ext_resource type="Script" path="res://addons/block_code/code_generation/option_data.gd" id="7_3q6bj"]
 [ext_resource type="Script" path="res://addons/block_code/serialization/block_script_serialization.gd" id="7_uuuue"]
 [ext_resource type="Script" path="res://addons/block_code/code_generation/variable_definition.gd" id="9_lo3p1"]
-[ext_resource type="PackedScene" uid="uid://c7l70grmkauij" path="res://addons/block_code/examples/spawner/ball.tscn" id="9_xrqll"]
+[ext_resource type="PackedScene" uid="uid://c7l70grmkauij" path="res://addons/block_code/examples/pong_game/ball.tscn" id="9_xrqll"]
 [ext_resource type="Script" path="res://addons/block_code/serialization/value_block_serialization.gd" id="11_yafka"]
 [ext_resource type="PackedScene" uid="uid://fhoapg3anjsu" path="res://addons/block_code/examples/pong_game/goal_area.tscn" id="12_nqmxu"]
 [ext_resource type="PackedScene" uid="uid://djmtbm15n2wqq" path="res://addons/block_code/examples/pong_game/player_score.tscn" id="13_jvkp7"]

addons/block_code/examples/spawner/ball.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=4 format=3 uid="uid://c7l70grmkauij"]
+[gd_scene load_steps=4 format=3 uid="uid://dhfvkunrlqads"]
 
 [ext_resource type="Texture2D" uid="uid://bcgr5amsq3jfl" path="res://addons/block_code/examples/pong_game/assets/ball.png" id="2_xkrmm"]
 

addons/block_code/examples/spawner/spawner.tscn

@@ -1,7 +1,7 @@
 [gd_scene load_steps=37 format=3 uid="uid://cbgxxdewi6gld"]
 
 [ext_resource type="Script" path="res://addons/block_code/simple_spawner/simple_spawner.gd" id="1_g2l2s"]
-[ext_resource type="PackedScene" uid="uid://c7l70grmkauij" path="res://addons/block_code/examples/spawner/ball.tscn" id="2_d0h86"]
+[ext_resource type="PackedScene" uid="uid://dhfvkunrlqads" path="res://addons/block_code/examples/spawner/ball.tscn" id="2_d0h86"]
 [ext_resource type="PackedScene" uid="uid://c8hrliwojohal" path="res://addons/block_code/examples/spawner/volatile_ball.tscn" id="3_tt12o"]
 [ext_resource type="Script" path="res://addons/block_code/block_code_node/block_code.gd" id="4_e0fbh"]
 [ext_resource type="Script" path="res://addons/block_code/serialization/block_serialization_tree.gd" id="5_g4h7g"]