[UIK-3927][docs] update NoticeBubble docs

[j-mnizhek]

Motivation and Context

Current behaviour: if notice is closed automatically by a timer, hovering over it will reset the timer. The countdown will start again after the mouse pointer leaves the notice. But if the focus is on some element inside the NoticeBubble, the timer won't start again and will be closed.

Expected behaviour: if notice is closed automatically by a timer, hovering over it or focusing on interactive elements inside it will reset the timer. The countdown will start again after the mouse pointer or focus leaves the notice.

We need to:

• Fix this behaviour (developer). The timer should reset on both hover and focus [UIK-3927][notice-bubble] fixed timer for keyboard interactions + removed unnecessary focusLock #2982
• Update documentation (designer).

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• Nice improve.

Checklist:

• I have updated the documentation accordingly.
• I have added new tests on added of fixed functionality.