Description of change

In codebases that load Pixi type definitions with strictNullChecks but without skipLibCheck the change from #11346 causes the following error:

TS2344: Type 'null' does not satisfy the constraint 'GPUData'.
    81 |  * @standard
    82 |  */
  > 83 | export declare class DOMContainer extends ViewContainer<null> {
       |                                                         ^^^^
    84 |     /** @internal */
    85 |     readonly renderPipeId: string;
    86 |     /** @internal */

From reading the code I assume the null means the _gpuData is simply not used. As such I replaced it with never, which does satisfy TypeScript.

cc @GoodBoyDigital

Pre-Merge Checklist

• Lint process passed (npm run lint)
• Tests passed (npm run test)