Player: Stop player particle system running on player defeat (#2370)

The player's particle system now stops emitting when the player is
defeated.

Resolves #2260

---------

Co-authored-by: Manuel Quiñones <manuq@endlessaccess.org>

Author: Litraxx

scenes/game_elements/characters/player/components/player.gd

@@ -70,6 +70,7 @@ var _system_controllers: Array[Node] = []
 @onready var player_repel: Node2D = %PlayerRepel
 @onready var player_hook: PlayerHook = %PlayerHook
 @onready var player_sprite: AnimatedSprite2D = %PlayerSprite
+@onready var player_dust_particles: GPUParticles2D = %PlayerDustParticles
 @onready var _walk_sound: AudioStreamPlayer2D = %WalkSound
 
 
@@ -208,6 +209,8 @@ func defeat(falling: bool = false) -> void:
 	# Stop moving the player.
 	velocity = Vector2.ZERO
 
+	player_dust_particles.emitting = false
+
 	GameState.player.decrement_lives()
 
 	if falling: