Update titles and summaries of the Date and time settings page

Design doc: go/dd-android-settings-time-2024

This change covers Part 1, which consists of adding user-friendly summary under each toggle and rewording titles.

Bug: 296835792
Test: on-device and atest
Flag: EXEMPT resource only update
Change-Id: I0b685743599880fc1c4ad680eca9c36e4e64d0ff

tests/robotests/src/com/android/settings/datetime/AutoTimePreferenceControllerTest.java

@@ -34,6 +34,8 @@ import android.os.UserHandle;
 
 import androidx.preference.Preference;
 
+import com.android.settings.R;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -153,6 +155,12 @@ public class AutoTimePreferenceControllerTest {
         assertThat(mController.isEnabled()).isFalse();
     }
 
+    @Test
+    public void getSummary() {
+        assertThat(mController.getSummary().toString()).isEqualTo(
+                mContext.getString(R.string.date_time_auto_summary));
+    }
+
     private static TimeCapabilitiesAndConfig createCapabilitiesAndConfig(boolean autoSupported,
             boolean autoEnabled) {
         int configureAutoDetectionEnabledCapability =