bug(select): cannot close non-native select menu with Talkback and iOS voiceover without selecting an option

[zarend]

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

For the non-native select, there is no way to close the options menu on mobile screen readers without selection an option. This affects both the material select and MDC-based select.

Reproduction

Steps to reproduce:

1. with iOS voiceover or Talkback screenreader enabled, navigate to https://material.angular.io/components/select/overview
2. Navigate to "Basic mat-select" demo
3. Click on "Favorite Food"
4. (Menu appears with "Steak", "Pizza" and "Tacos")

Expected Behavior

There should be a way to close the menu without selecting an option.

Actual Behavior

There is no way to close the menu without selecting an option.

Environment

screen readers: iOS Voiceover, Android Talkback