feat(cdk/menu): Add backdrop support and maybe able to customize all overlay options in CDK Menu

### Feature Description

I think the [CDK Menu Trigger](https://github.com/angular/components/blob/main/src/cdk/menu/menu-trigger-base.ts) should provide an ability to set a backdrop in the overlay and also other `OverlayConfig` options.

### Use Case

This lets us create a custom Menu closer to the Mat Menu which already supports a transparent backdrop.

从 src/cdk/menu/menu-trigger-base.ts 开始，检查 CDK Menu Trigger 如何创建其 overlay，然后将所请求的行为与现有的 Mat Menu backdrop 支持进行比较。当 trigger 能够提供 backdrop，并公开创建在这方面可与 Mat Menu 相媲美的自定义菜单所需的相关 OverlayConfig 选项时，即视为完成。

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