UI change in caption preferences in Settings

Move the switch after the caption preview and change the oreder of the
settings inside in caption preferences in Accessibility settings.

Reference link for screenshot:
https://drive.google.com/file/d/1EQLpfQFnJTwU1F8vLAOSHPYqSXKWL_ap/view?usp=sharing

Bug: 130755332
Test: Visual
Change-Id: Icb4dabdef71be165a21d1bde474872ee0bb35bfa
Merged-In: Icb4dabdef71be165a21d1bde474872ee0bb35bfa
(cherry picked from commit fd1f1c0f)