Subsystem Audio: Improvements to static typing (#2557)

just more specific node types, not a big deal

Author: endaye

addons/dialogic/Modules/Audio/subsystem_audio.gd

@@ -107,7 +107,7 @@ func update_audio(channel_name:= "", path := "", settings_overrides := {}) -> vo
 
 	## Handle previous audio on channel
 	if is_channel_playing(channel_name):
-		var prev_audio_node: Node = current_audio_channels[channel_name]
+		var prev_audio_node: AudioStreamPlayer = current_audio_channels[channel_name]
 		prev_audio_node.name += "_Prev"
 		if audio_settings.fade_length > 0.0:
 			var fade_out_tween: Tween = create_tween()
@@ -215,7 +215,7 @@ func stop_all_one_shot_sounds() -> void:
 
 ## Converts a linear loudness value to decibel and sets that volume to
 ## the given [param node].
-func interpolate_volume_linearly(value: float, node: Node) -> void:
+func interpolate_volume_linearly(value: float, node: AudioStreamPlayer) -> void:
 	node.volume_db = linear_to_db(value)