[TopAppBar] Toolbar and status bar flickering on scrolling up

Description: The toolbar and status bar flicker when app:liftOnScroll is disabled on an AppBarLayout while scrolling up the screen.

https://github.com/user-attachments/assets/c9307363-ac27-4907-999d-f00a1063006e

Expected behavior: There should be no flickering or dimming on these bars.

Source code: layout:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        app:liftOnScroll="false"
        app:statusBarForeground="?attr/colorSurface">

        <com.google.android.material.appbar.MaterialToolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_scrollFlags="scroll|snap|enterAlways" />

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="16dp">

            <Button
                android:id="@+id/button_first"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Button"
                app:layout_constraintBottom_toTopOf="@id/textview"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/textview"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="16dp"
                android:text="@string/lorem_ipsum"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/button_first" />
        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.core.widget.NestedScrollView>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

Minimal sample app repro: ToolbarDemo.zip

Android API version: 36

Material Library version: 1.14.0-beta01

Device: Any

Start with the provided ToolbarDemo.zip and reproduce the flicker on Android API 36 using Material Library 1.14.0-beta01, focusing on the AppBarLayout, MaterialToolbar, and NestedScrollView configuration shown in the issue. Trace the scrolling behavior with liftOnScroll disabled and statusBarForeground set, then verify that scrolling up leaves the toolbar and status bar without flickering or dimming.