Merge "Adjust choose assist app string" into mnc-dev

    <!-- Summary for No Default Assist settings [CHAR LIMIT=45] -->

    <string name="default_assist_none">None</string>

    <!-- Title for Choose Assist dialog [CHAR LIMIT=30] -->

    <string name="choose_assist_title">Choose Assist</string>

    <!-- Title for Choose Assist dialog [CHAR LIMIT=35] -->

    <string name="choose_assist_title">Choose Assist app</string>

    <!-- [CHAR_LIMIT=45] Title of the security warning dialog for setting an assitant -->

    <string name="assistant_security_warning_title">