Remove duplicate strings.

"Yes" and "no" were redefined many times with no clear benefit, so this
consolidates them into one definition.

Bug: 243843096
Test: Build, install, and open the Settings app
Test: atest SettingsRoboTests
Change-Id: I5f84d09f223efd478461ded93aeac82bf7b128d8

src/com/android/settings/notification/BubbleSummaryNotificationPreferenceController.java

@@ -44,7 +44,7 @@ public class BubbleSummaryNotificationPreferenceController extends BasePreferenc
         return mContext.getString(
                 areBubblesEnabled()
                         ? R.string.notifications_bubble_setting_on_summary
-                        : R.string.switch_off_text);
+                        : R.string.off);
     }
 
     @Override

src/com/android/settings/notification/SpatialAudioParentPreferenceController.java

@@ -71,7 +71,7 @@ public class SpatialAudioParentPreferenceController extends BasePreferenceContro
             return mContext.getString(R.string.spatial_summary_on_one,
                     mContext.getString(R.string.spatial_audio_wired_headphones));
         } else {
-            return mContext.getString(R.string.spatial_summary_off);
+            return mContext.getString(R.string.off);
         }
     }
 }

src/com/android/settings/notification/zen/ZenModeSettings.java

@@ -194,7 +194,7 @@ public class ZenModeSettings extends ZenModeSettingsBase {
                 String description = ZenModeConfig.getDescription(mContext, true, config, false);
 
                 if (description == null) {
-                    return mContext.getString(R.string.zen_mode_sound_summary_on);
+                    return mContext.getString(R.string.on);
                 } else {
                     return mContext.getString(R.string.zen_mode_sound_summary_on_with_info,
                             description);

src/com/android/settings/notification/zen/ZenModeSettingsFooterPreferenceController.java

@@ -274,7 +274,7 @@ public class ZenModeSettingsFooterPreferenceController extends AbstractZenModePr
         }
 
         private int getAllowRes(boolean allow) {
-            return allow ? R.string.zen_mode_sound_summary_on : R.string.switch_off_text;
+            return allow ? R.string.on : R.string.off;
         }
 
         @Override

src/com/android/settings/notification/zen/ZenRulePreference.java

@@ -151,7 +151,7 @@ public class ZenRulePreference extends PrimarySwitchPreference {
         }
 
         return (rule == null || !rule.isEnabled())
-                ? mContext.getResources().getString(R.string.switch_off_text)
-                : mContext.getResources().getString(R.string.switch_on_text);
+                ? mContext.getResources().getString(R.string.off)
+                : mContext.getResources().getString(R.string.on);
     }
 }