Fixing MainThreadInitializedObject

> Making SafeCloseable implementation mandatory, to prevent leaks during test and preview
> Removing getNoCreate method and defining executeIfCreated to avoid null pointer exceptions
> Fixing sandbox value leaking into main, by Checking sandbox against App context
> Converting sanbox to an interface instead a class

Bug: 335280439
Test: Presubmit
Flag: None
Change-Id: I951dcde871898e745ff6490a1c4f8fd1512888f5

src/com/android/launcher3/pm/InstallSessionHelper.java

@@ -32,7 +32,6 @@ import androidx.annotation.WorkerThread;
 import com.android.launcher3.Flags;
 import com.android.launcher3.LauncherPrefs;
 import com.android.launcher3.SessionCommitReceiver;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.ItemInstallQueue;
 import com.android.launcher3.util.IntArray;
@@ -41,6 +40,7 @@ import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.Preconditions;
+import com.android.launcher3.util.SafeCloseable;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -52,7 +52,7 @@ import java.util.Objects;
  * Utility class to tracking install sessions
  */
 @SuppressWarnings("NewApi")
-public class InstallSessionHelper {
+public class InstallSessionHelper implements SafeCloseable {
 
     @NonNull
     private static final String LOG = "InstallSessionHelper";
@@ -89,6 +89,9 @@ public class InstallSessionHelper {
         mLauncherApps = context.getSystemService(LauncherApps.class);
     }
 
+    @Override
+    public void close() { }
+
     @WorkerThread
     @NonNull
     private IntSet getPromiseIconIds() {