Merge "updated notificiaton expand button hover states" into main

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<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true" android:color="@android:color/system_on_surface_dark" android:alpha="0.06"/>

    <item android:state_hovered="true" android:color="@android:color/system_on_surface_dark" android:alpha="0.03"/>

    <item android:color="@android:color/system_on_surface_dark" android:alpha="0.00"/>

</selector>

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  ~ limitations under the License.

  -->

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true" android:color="@android:color/system_on_surface_light" android:alpha="0.12"/>

    <item android:state_hovered="true" android:color="@android:color/system_on_surface_light" android:alpha="0.08"/>

    <item android:color="@android:color/system_on_surface_light" android:alpha="0.00"/>

<selector xmlns:android="http://schemas.android.com/apk/res/android"

          xmlns:androidprv="http://schemas.android.com/apk/prv/res/android">

    <item android:state_pressed="true" android:color="?androidprv:attr/materialColorOnPrimaryFixed"

          android:alpha="0.15"/>

    <item android:state_hovered="true" android:color="?androidprv:attr/materialColorOnPrimaryFixed"

          android:alpha="0.11"/>

    <item android:color="@color/transparent" />

</selector>

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