Add @WorkerThread Annotations to RPC calling methods in QsbContainerView.

Bug: 243408674
Test: Compiled and runs on phone correctly.
Change-Id: I5062e2c88f161562f75158f86501c6443fa06aae
diff --git a/src/com/android/launcher3/AutoInstallsLayout.java b/src/com/android/launcher3/AutoInstallsLayout.java
index 2083726..5367d80 100644
--- a/src/com/android/launcher3/AutoInstallsLayout.java
+++ b/src/com/android/launcher3/AutoInstallsLayout.java
@@ -38,6 +38,7 @@
 import android.util.Xml;
 
 import androidx.annotation.Nullable;
+import androidx.annotation.WorkerThread;
 
 import com.android.launcher3.LauncherProvider.SqlArguments;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -531,6 +532,7 @@
     protected class SearchWidgetParser extends PendingWidgetParser {
         @Override
         @Nullable
+        @WorkerThread
         public ComponentName getComponentName(XmlPullParser parser) {
             return QsbContainerView.getSearchComponentName(mContext);
         }