Messaging: Looply empty states, popovers, and conversation polish

Keep English-only UI, align home menus to the screen guideline, and
match message-action icon weight across conversation and list popovers.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/src/main/java/com/android/messaging/BugleApplication.java

@@ -36,6 +36,7 @@ import com.android.messaging.sms.BugleApnSettingsLoader;
 import com.android.messaging.sms.BugleUserAgentInfoLoader;
 import com.android.messaging.sms.MmsConfig;
 import com.android.messaging.ui.ConversationDrawables;
+import com.android.messaging.ui.home.HomeToast;
 import com.android.messaging.util.BuglePrefsKeys;
 import com.android.messaging.util.LogUtil;
 import com.android.messaging.util.PhoneUtils;
@@ -57,6 +58,7 @@ public class BugleApplication extends Application implements UncaughtExceptionHa
         super.onCreate();
 
         FactoryImpl.register(getApplicationContext(), this);
+        HomeToast.install(this);
 
         sSystemUncaughtExceptionHandler = Thread.getDefaultUncaughtExceptionHandler();
         Thread.setDefaultUncaughtExceptionHandler(this);