Add string for "Connected via Wi-Fi assistant".

    <!-- Wifi Assistant title.  [CHAR LIMIT=40] -->

    <string name="wifi_assistant_title">Wi\u2011Fi Assistant</string>

    <!-- Status message of Wi-Fi when it is connected by a Wi-Fi assistant application. [CHAR LIMIT=NONE] -->

    <string name="connected_via_wfa">Connected via Wi\u2011Fi assistant</string>

    <!-- Wifi Display settings. The title of the screen. [CHAR LIMIT=40] -->

    <string name="wifi_display_settings_title">Cast screen</string>