Material 3 Date Picker with Disabled Dates: Disabled Dates are Focusable with External Keyboard

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Description: Disabled dates in the M3 Date Picker component are focusable via external keyboard navigation, however there is no visible focus indicator. Disabled controls should not receive keyboard focus.

Note: This is an accessibility failure of WCAG 2.4.7 Focus Visible (and raises concerns with WCAG 2.1.1 Keyboard as well).

Expected behavior: Disabled controls are not focusable via external keyboard navigation. When using keys on a month with disabled dates, focus should skip over the disabled dates.

Note: Expected Behavior would match Material Compose Date Picker behavior

Steps to Reproduce:

1. Connect a physical external keyboard to an Android mobile device
2. Open a default Material 3 Date Picker component that contains disabled dates
3. Using the keys on the keyboard, navigate to a disabled date
4. Confirm disabled dates can be focused, but focus is “lost” since there is no visible focus indicator for the disabled dates

Note on attachments:

1. Recording of issue from Material 3 Date Picker
2. Bug report from Samsung Galaxy S20 (also reproducible on Google Pixel devices)

https://github.com/material-components/material-components-android/assets/126836844/73388230-4789-419c-aa85-735644e2b9b1

bugreport-x1quex-TP1A.220624.014-2024-05-01-16-12-22.zip

Android API version: All

Material Library version: 1.11.0 (at least)

Device: Samsung Galaxy S20 and all Google Pixel