Make not to acquire sound focus when screen reader and notification modes

Make not to acquire sound focus when screen reader and notification modes

- Issue:
In Tizen 7.0 FHub, media-type playing is stopped, because TTS screen-reader mode acquires a sound focus.

- Solution:
Rollback to the previous TTS sound focus policy.
* Default / Interrupt modes: acquire sound focus
* Screen-reader / Notification modes: NOT acquire sound focus

Change-Id: I73a63743f20e341988db42190435ca9ade271eba
Signed-off-by: sooyeon <sooyeon.kim@samsung.com>
(cherry picked from commit ff6316a4b2a1d4ece22c949486d038e8561b0e26)