Use the Android RadioButton for clock size options

Major reason of the change is that we need to properly support a11y and
the best way is to use the original Android UI components.

To implement title and description without creating 2 TextViews, we use
SpannableString to give style to title and description.

Test: Manually tested that the view looks the same and the a11y works as
Test: expected.
Bug: 280937148
Flag: NONE
Change-Id: Id81c3adcc07892f0688d9169b64861b72a4a957d