Update Split Overview menu strings

    <!-- Options for recent tasks -->

    <!-- Title for an option to enter split screen mode for a given app -->

    <string name="recent_task_option_split_screen">Split screen</string>

    <string translatable="false" name="split_screen_position_top">Pin to top</string>

    <string translatable="false" name="split_screen_position_left">Pin to left</string>

    <string translatable="false" name="split_screen_position_right">Pin to right</string>

    <string translatable="false" name="split_screen_position_top">Split top</string>

    <string translatable="false" name="split_screen_position_left">Split left</string>

    <string translatable="false" name="split_screen_position_right">Split right</string>

    <!-- Widgets -->

    <!-- Message to tell the user to press and hold on a widget to add it [CHAR_LIMIT=50] -->