message: Fix RenderTexture not working on Canvas with pixi-legacy
diff: -import { AbstractRenderer } from '@pixi/core';
  +import { AbstractRenderer, resources } from '@pixi/core';
  import { CanvasRenderTarget, sayHello } from '@pixi/utils';
  import CanvasMaskManager from './utils/CanvasMaskManager';
  import mapCanvasBlendModesToPixi from './utils/mapCanvasBlendModesToPixi';
  @@ -161,7 +161,7 @@ export default class CanvasRenderer extends AbstractRenderer
  renderTexture.height,
  renderTexture.resolution
  );
  - renderTexture.source = renderTexture._canvasRenderTarget.canvas;
  + renderTexture.resource = new resources.CanvasResource(renderTexture._canvasRenderTarget.canvas);
  renderTexture.valid = true;
  }
  