message: Adjust _handle* return types
diff: /**
  * Handle mouse interaction events for a Canvas object.
  * There are three phases of events: hover, click, and drag
  + * @typeParam O - Canvas object this instance handles events for
  + * @typeParam T - Target object for mouseinteraction events. Generally a `ControlIcon` or `O`.
  + * (default: `O`)
  *
  * Hover Events:
  * _handleMouseOver
  * _handleDragCancel
  * action: dragLeftCancel
  * action: dragRightCancel
  - * @typeParam O - Canvas object this instance handles events for
  - * @typeParam T - Target object for mouseinteraction events. Generally a `ControlIcon` or `O`.
  - * (default: `O`)
  */
  declare class MouseInteractionManager<O extends PIXI.Container = PIXI.Container, T extends PIXI.Container = O> {
  constructor(
  @@ -186,7 +186,7 @@ declare class MouseInteractionManager<O extends PIXI.Container = PIXI.Container,
  /**
  * Handle mouse-down which trigger a single left-click workflow.
  */
  - protected _handleClickLeft(event: PIXI.InteractionEvent): unknown;
  + protected _handleClickLeft(event: PIXI.InteractionEvent): void;
  /**
  * Handle mouse-down which trigger a single left-click workflow.
  @@ -202,7 +202,7 @@ declare class MouseInteractionManager<O extends PIXI.Container = PIXI.Container,
  /**
  * Handle single right-click actions.
  */
  - protected _handleClickRight(event: PIXI.InteractionEvent): unknown;
  + protected _handleClickRight(event: PIXI.InteractionEvent): void;
  /**
  * Handle double right-click actions.
  @@ -227,17 +227,17 @@ declare class MouseInteractionManager<O extends PIXI.Container = PIXI.Container,
  /**
  * Handle mouse up events which may optionally conclude a drag workflow
  */
  - protected _handleMouseUp(event: PIXI.InteractionEvent): unknown;
  + protected _handleMouseUp(event: PIXI.InteractionEvent): void;
  /**
  * Handle the conclusion of a drag workflow, placing all dragged objects back on the layer
  */
  - protected _handleDragDrop(event: PIXI.InteractionEvent): unknown;
  + protected _handleDragDrop(event: PIXI.InteractionEvent): void;
  /**
  * Handle the cancellation of a drag workflow, resetting back to the original state
  */
  - protected _handleDragCancel(event: PointerEvent): unknown;
  + protected _handleDragCancel(event: PointerEvent): void;
  /**
  * Enumerate the states of a mouse interaction workflow.
  