Fix file override confirmation dialog from being overflown with text when exporting

Fixes #1477

Author: OverloadedOrama

src/UI/Dialogs/ExportDialog.gd

@@ -281,7 +281,8 @@ func open_path_validation_alert_popup(path_or_name: int = -1) -> void:
 
 
 func open_file_exists_alert_popup(text: String) -> void:
-	file_exists_alert_popup.dialog_text = text
+	var file_exists_label := file_exists_alert_popup.get_node(^"ScrollContainer/Label") as Label
+	file_exists_label.text = text
 	file_exists_alert_popup.popup_centered_clamped()
 
 
@@ -454,15 +455,17 @@ func _on_file_format_item_selected(index: int) -> void:
 
 ## Overwrite existing file
 func _on_file_exists_alert_confirmed() -> void:
-	file_exists_alert_popup.dialog_text = Export.file_exists_alert
+	var file_exists_label := file_exists_alert_popup.get_node(^"ScrollContainer/Label") as Label
+	file_exists_label.text = Export.file_exists_alert
 	Export.stop_export = false
 	resume_export_function.emit()
 
 
 func _on_file_exists_alert_custom_action(action: StringName) -> void:
 	if action == &"cancel":
 		# Cancel export
-		file_exists_alert_popup.dialog_text = Export.file_exists_alert
+		var file_exists_label := file_exists_alert_popup.get_node(^"ScrollContainer/Label") as Label
+		file_exists_label.text = Export.file_exists_alert
 		Export.stop_export = true
 		resume_export_function.emit()
 		file_exists_alert_popup.hide()

src/UI/Dialogs/ExportDialog.tscn

@@ -349,7 +349,18 @@ access = 2
 dialog_text = "DirAccess path and file name are not valid!"
 
 [node name="FileExistsAlert" type="AcceptDialog" parent="." unique_id=2050038451]
-dialog_text = "File %s already exists. Overwrite?"
+oversampling_override = 1.0
+size = Vector2i(400, 300)
+
+[node name="ScrollContainer" type="ScrollContainer" parent="FileExistsAlert" unique_id=1400960240]
+offset_left = 8.0
+offset_top = 8.0
+offset_right = 392.0
+offset_bottom = 251.0
+
+[node name="Label" type="Label" parent="FileExistsAlert/ScrollContainer" unique_id=1256306510]
+layout_mode = 2
+text = "File %s already exists. Overwrite?"
 
 [node name="ExportProgressBar" type="Window" parent="." unique_id=438204898]
 title = "Export Progress"