Merge "Fallback to focused window state if input focus target is not a window" into main

                // Gets the top focused display Id and window token for supporting multi-display.

                if (Flags.useInputReportedFocusForAccessibility()) {

                    topFocusedDisplayId = mAccessibilityController.mFocusedDisplay;

                    topFocusedWindowToken = mAccessibilityController.mFocusedWindow.get(

                    final IBinder focusedInputToken = mAccessibilityController.mFocusedWindow.get(

                            topFocusedDisplayId);

                    if (focusedInputToken != null) {

                        topFocusedWindowToken = focusedInputToken;

                    } else {

                        // If there is no focused target as reported by input, then fall back to the

                        // currently focused window in WM (if it exists). This can happen if there

                        // are other input windows that are focused that are neither WindowStates

                        // nor EmbeddedWindows (ie. input consumers)

                        final WindowState topFocusedWindowState =

                                mService.mRoot.getDisplayContent(topFocusedDisplayId).mCurrentFocus;

                        topFocusedWindowToken = topFocusedWindowState != null

                                ? topFocusedWindowState.mClient.asBinder()

                                : null;

                    }

                } else {

                    final WindowState topFocusedWindowState =

                            mService.mRoot.getTopFocusedDisplayContent().mCurrentFocus;