fix(material/option): add fix for autocomplete mobile screen readers

[DBowen33]

trafficstars

added tabindex=-1 to add programmatic focus to mat-options

fixes b/272216403

[github-actions[bot]]

Deployed dev-app for a55dfe734d08385cde5c8dac4a0423428f4316a4 to: https://ng-dev-previews-comp--pr-angular-components-29586-dev-kk3sbil8.web.app

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[comanescuadrian95]

Hello @crisbeto ,

I could not reach you. I know this question is not in regards of the current PR but I have a question in regards of the autocomplete component, does autocomplete is meant to support displaying of custom textual messages for empty cases when searching. If so how could I achieve this using autocomplete?

Here is an exemple of what I mean more precisely. That I want to achieve with this angular material component.

https://stackoverflow.com/questions/61020581/react-material-ui-autocomplete-customize-no-options-text

[crisbeto]

We don't currently support something like that, but feel free to open a feature request.

[andrewseguin]

Closing since it seems this ended up being a TalkBack issue

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