message: Replace filters getter with filters member
diff: @@ -494,7 +494,7 @@ export class Container extends DisplayObject
  }
  // do a quick check to see if this element has a mask or a filter.
  - if (this._mask || (this.filters && this.filters.length))
  + if (this._mask || (this._filters && this._filters.length))
  {
  this.renderAdvanced(renderer);
  }
  @@ -520,7 +520,7 @@ export class Container extends DisplayObject
  {
  renderer.batch.flush();
  - const filters = this.filters;
  + const filters = this._filters;
  const mask = this._mask;
  // push filter first as we need to ensure the stencil buffer is correct for any masking
  