Copy targetInputMethodUser in EditorInfo

This CL extends EditorInfo.createCopyInternal to also copy the
targetInputMethodUser field to the newly created instance.

Test: atest android.view.inputmethod.EditorInfoTest
Fix: 236238539
Change-Id: Ic546e35978ad7ff5be824d34168088e68d3d9b36

core/java/android/view/inputmethod/EditorInfo.java

@@ -1016,6 +1016,7 @@ public class EditorInfo implements InputType, Parcelable {
         newEditorInfo.mInitialSurroundingText = mInitialSurroundingText;
         newEditorInfo.hintLocales = hintLocales;
         newEditorInfo.contentMimeTypes = ArrayUtils.cloneOrNull(contentMimeTypes);
+        newEditorInfo.targetInputMethodUser = targetInputMethodUser;
         return newEditorInfo;
     }