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Brandy Carney 20073e10c9 fix(angular): remove the tabindex set by routerLink from Ionic components (#29744)
Issue number: resolves #20632

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## What is the current behavior?
When using the `routerLink` directive in Angular, it automatically adds
`tabindex="0"` to the element. This creates issues with Ionic components
that render native button or anchor elements, as they have their own
focus management. As a result, when navigating between list items with
`routerLink` using the `Tab` key, you need to press the `Tab` key twice
to move to the next item. This problem is illustrated in the following
demo:

[![Open in
StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/edit/angular-blfa7h?file=src%2Fapp%2Fexample.component.html)

Related Angular issue: https://github.com/angular/angular/issues/28345

## What is the new behavior?
Updated our `RouterLinkDelegateDirective` to check if the element using
`routerLink` is one of the following Ionic components:
`ion-back-button`, `ion-breadcrumb`, `ion-button`, `ion-card`,
`ion-fab-button`, `ion-item`, `ion-item-option`, `ion-menu-button`,
`ion-segment-button`, or `ion-tab-button`. If so, it removes the
`tabindex` attribute from the element. This allows these Ionic
components to let the native button or anchor element handle the focus.

This solution is demonstrated in the following demo:

[![Open in
StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/edit/angular-blfa7h-svmguh?file=src%2Fapp%2Fexample.component.html)

> [!NOTE]
> I did not include the `ion-router-link` component in the list to
remove `tabindex` because [the router link
documentation](https://ionicframework.com/docs/api/router-link) does not
recommend using it with Angular:
>> Note: this component should only be used with vanilla and Stencil
JavaScript projects. For Angular projects, use an `<a>` and `routerLink`
with the Angular router.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

## Other information

Dev build: `8.2.7-dev.11722448707.1e8c66e6`
2024-08-08 15:02:35 +00:00
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