bug(COMPONENT): Inconsistency in behavior of a[mat-button] and a[mat-menu-item] when disabled

### Is this a regression?

- [ ] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

_No response_

### Description

This may be a feature request.

When a[mat-button] is disabled, if you right-click it, the menu will be the normal one, but if you right-click a[mat-menu-item], the options for clicking a link will be displayed, and you can actually navigate to the page.

### Reproduction

https://github.com/reuse-ay/angular-mat-a.git

### Expected Behavior

When a[mat-menu-item] is disabled, I don’t want the option for the link to be displayed.

### Actual Behavior

option for the link to be displayed.

### Environment

- Angular:19
- CDK/Material:19
- Browser(s):chrome
- Operating System (e.g. Windows, macOS, Ubuntu):windows

首先，使用 Windows 上的 Chrome，在链接的 angular-mat-a 仓库中复现该行为，并比较已禁用的 a[mat-button] 和 a[mat-menu-item]。跟踪 Angular Material 的 menu-item 和 button 行为；当已禁用的 mat-menu-item 不再暴露链接选项或允许导航，并与已禁用按钮的行为一致时，即表示完成。

由索引模型根据 Issue 内容生成。