bug(radio): no persistent focus indicator if clicked on outer touch target padding

[RobinKamps]

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

no persistent focus indicator if clicked on outer touch target padding... leading to non convenient keyboard (tab / shift+tab) controls.

Reproduction

Steps to reproduce:

1. https://material.angular.io/components/radio/overview
2. click on the outer edges vs click on the center

Expected Behavior

1. remaining focus indicator is set.
   or
2. edges should not be clickable/no hover focus/no cursor.

Actual Behavior

no persistent focus indicator if clicked on outer touch target padding... leading to non convenient keyboard (tab / shift+tab) controls.

Environment

• Angular: 15.1.1
• CDK/Material: 15.1.1
• Browser(s): all
• Operating System (e.g. Windows, macOS, Ubuntu): all

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