Is Article 34 of the Charter of Fundamental Rights of the European Union, proclaimed at Nice on 7 December 2000 and adjusted at Strasbourg on 12 December 2007, to be interpreted as applying to childbirth and maternity allowances under Article 3(1)(b) and (j) of Regulation (EC) No 883/2004 of the European Parliament and of the Council of 29 April 2004 on the coordination of social security systems, referred to in Article 12(1)(e) of Directive 2011/98/EU of the European Parliament and of the Council of 13 December 2011 on a single application procedure for a single permit, and is EU law therefore to be interpreted as precluding national legislation which fails to extend the abovementioned benefits, which are already granted to foreign nationals holding a long-term resident’s EU residence permit, to foreign nationals who hold a single permit under that directive?