Speaker Portraits: Fix overlapping portraits when characters have a custom theme (#2464)

By switching to a new speaker before changing the style, I solved the issue of overlapping portraits. This way, when changing the style, the object calling change_speaker is already the next speaker.

Author: ssw940521

addons/dialogic/Modules/Text/event_text.gd

@@ -64,6 +64,7 @@ func _execute() -> void:
 
 	var character_name_text := dialogic.Text.get_character_name_parsed(character)
 	if character:
+		dialogic.current_state_info['speaker'] = character.resource_path
 		if dialogic.has_subsystem('Styles') and character.custom_info.get('style', null):
 			dialogic.Styles.change_style(character.custom_info.style, false)
 			await dialogic.get_tree().process_frame