bug(aria/menu): MenuItem disabled doesn't accept a bare attribute #33964

Is this a regression? No

Description

ngMenuItem's disabled input has no booleanAttribute transform, so a bare disabled attribute fails strict template type-checking:

<div ngMenuItem value="archive" disabled>Archive</div>

error TS2322: Type 'string' is not assignable to type 'boolean'.

Every other disabled input in @angular/aria accepts the bare attribute: Toolbar, ToolbarWidget, ToolbarWidgetGroup, Listbox, Option, Combobox, AccordionGroup and AccordionTrigger all use input(false, {transform: booleanAttribute}). MenuItem declares input<boolean>(false).

It also matters for wrappers. A component that applies MenuItem as a host directive and exposes disabled through hostDirectives inputs can't add the transform itself, so its users can't write <my-menu-item disabled> either.

Reproduction

1. Use ngMenu with <div ngMenuItem value="x" disabled>X</div> in a strict-templates app.
2. Build. Type-checking fails with TS2322.

Without strict templates (or in JIT), the value is '', which is falsy, so the item is not disabled.

Expected behaviour

A bare disabled disables the item, the same as [disabled]="true" and the same as the other @angular/aria directives.

Actual behaviour

A compile error with strict templates. Otherwise the item is not disabled.

Environment

• @angular/aria 22.2.3 (also 22.3.0-next.2)
• Angular 22.2