Fix some icons on conversation screen

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

        android:width="24dp"

        android:height="24dp"

        android:viewportWidth="24"

        android:viewportHeight="24"

        android:tint="?android:attr/colorControlNormal">

    <path

        android:fillColor="@android:color/white"

        android:pathData="M12,15m-2,0a2,2 0,1 1,4 0a2,2 0,1 1,-4 0"/>

    <path

        android:fillColor="@android:color/white"

        android:pathData="M18,8h-1.5V5.5C16.5,3.01 14.49,1 12,1S7.5,3.01 7.5,5.5V8H6c-1.1,0 -2,0.9 -2,2v10c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2V10C20,8.9 19.1,8 18,8zM9.5,5.5C9.5,4.12 10.62,3 12,3c1.38,0 2.5,1.12 2.5,2.5V8h-5V5.5zM18,20H6V10h1.5h9H18V20z"/>

</vector>

            android:key="ringtone"

            android:title="@string/notification_channel_sound_title"

            android:dialogTitle="@string/notification_channel_sound_title"

            android:icon="@drawable/ic_media_stream"

            android:icon="@drawable/ic_notifications"

            android:showSilent="true"

            android:showDefault="true"/>

        <!-- Visibility Override -->

        <com.android.settings.RestrictedListPreference

            android:key="visibility_override"

            android:icon="@drawable/ic_lock"

            android:icon="@drawable/ic_lock_closed"

            android:title="@string/app_notification_visibility_override_title"/>

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