Apply SettingsPreferenceTheme in Settings

- Set all of preference style inherit from SettingsPreferenceTheme
- Apply to Theme.Settings and Theme.Settings.Home
- Fix robotest failed in ScreenTimeoutSettingsTest

Bug: 185206291
Test: manual & robotest
Change-Id: I855d003b10348569903855fcbf235bc00265658b

tests/robotests/src/com/android/settings/widget/CardPreferenceTest.java

@@ -37,7 +37,7 @@ public class CardPreferenceTest {
     @Before
     public void setUp() {
         mContext = RuntimeEnvironment.application;
-        mContext.setTheme(R.style.PreferenceTheme);
+        mContext.setTheme(R.style.SettingsPreferenceTheme);
         mCardPreference = new CardPreference(mContext);
     }