[Catalyst] Migrate Brightness level

Test: atest DisplayScreenTest
Bug: 375895862
Flag: com.android.settings.flags.catalyst_display_settings_screen
Change-Id: Ia098e107e0e9f011db6742cc8d0ebecfc179cca6

src/com/android/settings/display/DisplayScreen.kt

@@ -48,6 +48,7 @@ class DisplayScreen :
     override fun fragmentClass() = DisplaySettings::class.java
 
     override fun getPreferenceHierarchy(context: Context) = preferenceHierarchy(this) {
+        +BrightnessLevelRestrictedPreference()
         +DarkModeScreen.KEY
         +PeakRefreshRateSwitchPreference()
     }