Hold WeakReference to split callback

import com.android.wm.shell.splitscreen.ISplitSelectListener;

import java.io.PrintWriter;

import java.lang.ref.WeakReference;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

        private final int mInitialTaskId;

        private final int mSecondTaskId;

        private final Consumer<Boolean> mSuccessCallback;

        private final WeakReference<Consumer<Boolean>> mSuccessCallback;

        RemoteSplitLaunchTransitionRunner(int initialTaskId, int secondTaskId,

                @Nullable Consumer<Boolean> callback) {

            mInitialTaskId = initialTaskId;

            mSecondTaskId = secondTaskId;

            mSuccessCallback = callback;

            mSuccessCallback = new WeakReference<>(callback);

        }

        @Override

                TaskViewUtils.composeRecentsSplitLaunchAnimator(mLaunchingTaskView, mStateManager,

                        mDepthController, mInitialTaskId, mSecondTaskId, info, t, () -> {

                            finishAdapter.run();

                            if (mSuccessCallback != null) {

                                mSuccessCallback.accept(true);

                            if (mSuccessCallback.get() != null) {

                                mSuccessCallback.get().accept(true);

                            }

                            resetState();

                        });