[A11Y] [Bullet List] Group level number and label

[pya35]

Prerequisites

• I have searched the backlog for duplicate or closed issues.

What happened?

For an ordered list, please group level number and label, to ease the understanding and the navigation with Talkback

We should hear "1. Label" instead of just "Label"

For a multiple levels list, we should hear the parent level first for example "1 A Label" (not the parent label but at least the level)

OUDS Android version

1.2.0

Your test device

No response

OS version

No response

Additional context

No response