Mute some notifications in VmTerminalApp

Bug: 381815474
Test: Run VmTerminalApp
Change-Id: I6a60bc82f618fb17c5f2e0667f6b0ea802bf5ee3
diff --git a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
index ac05d78..fad763c 100644
--- a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
+++ b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
@@ -41,7 +41,6 @@
 import java.net.SocketException;
 import java.net.UnknownHostException;
 import java.nio.file.Path;
-import java.util.Arrays;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
@@ -75,6 +74,7 @@
                         this, /* requestCode= */ 0, intent, PendingIntent.FLAG_IMMUTABLE);
         mNotification =
                 new Notification.Builder(this, this.getPackageName())
+                        .setSilent(true)
                         .setSmallIcon(R.drawable.ic_launcher_foreground)
                         .setContentTitle(getString(R.string.installer_notif_title_text))
                         .setContentText(getString(R.string.installer_notif_desc_text))
diff --git a/android/TerminalApp/java/com/android/virtualization/terminal/MainActivity.java b/android/TerminalApp/java/com/android/virtualization/terminal/MainActivity.java
index 397a546..1bd5eb0 100644
--- a/android/TerminalApp/java/com/android/virtualization/terminal/MainActivity.java
+++ b/android/TerminalApp/java/com/android/virtualization/terminal/MainActivity.java
@@ -471,6 +471,7 @@
         Icon icon = Icon.createWithResource(getResources(), R.drawable.ic_launcher_foreground);
         Notification notification =
                 new Notification.Builder(this, this.getPackageName())
+                        .setSilent(true)
                         .setSmallIcon(R.drawable.ic_launcher_foreground)
                         .setContentTitle(
                                 getResources().getString(R.string.service_notification_title))