IssueTracker

- Create new module and add `android.support.constraint.ConstraintLayout:2.0.0-beta2` and make layout file like
```
    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintEnd_toEndOf="@+id/flow"
        app:layout_constraintStart_toEndOf="@+id/flow">

        <TextView
            android:id="@+id/header"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textIsSelectable="false"
            app:layout_constrainedWidth="true"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:text="Header" />

        <android.support.constraint.helper.Flow
            android:id="@+id/flow"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:constraint_referenced_ids="header,recyclerView_cardList"
            app:flow_horizontalBias="0"
            app:flow_horizontalStyle="spread_inside"
            app:flow_wrapMode="chain"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView_cardList"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layoutManager="android.support.v7.widget.LinearLayoutManager"
            app:layout_constraintStart_toStartOf="parent"
            app:reverseLayout="true"
            tools:ignore="MissingConstraints"
            tools:itemCount="10">

        </android.support.v7.widget.RecyclerView>
```
, implement that module in application this time use androidx add `androidx.constraintlayout:constraintlayout:2.0.0-beta2` and enable Jetifier too.

- Jetifier try to transform `android.support.constraint.helper.Flow` to `androidx.constraintlayout.widget.helper.Flow` but there is no class exist in that package and correct one is androidx.constraintlayout.helper.widget.Flow
https://developer.android.com/reference/androidx/constraintlayout/helper/widget/Flow

- it should map to helper.widget.Flow not widget.helper.Flow