Separated emergency option final UI

 - Refine faster emergency icon.
 - Add ic_faster_emergency.xml to framework/core/res/drawable.
 - Remove faster_emergency_icon.xml from SystemUI/res/drawable.
 - Change emergency_icon.xml color to colorError.
 - Emergency option(India case) will follow separated option design if
 separated option feature is enabled.

Test: Manually,
use "adb shell settings put global faster_emergency_phone_call_enabled 1" to show separated emergency option(default case),
use "adb shell settings put global emergency_affordance_needed 1" to show India emergency option(India case),
India emergency option will be separated button if feature is enabled,
otherwise it will be default design.
Change wallpaper to enable light/dark theme & check separated emergency option color.
(light theme color : D93025    dark theme color : E25142)

Bug: 110658988
Change-Id: Id13bcb5b5242ded92b309667c5e2beb8694b9977