Efficient Tandem Process for the Catalytic Deprotection of N‐Allyl Amides and Lactams in Aqueous Media: A Novel Application of the Bis(allyl)–Ruthenium(IV) Catalysts [Ru(η3:η2:η3‐C12H18)Cl2] and [{Ru(η3:η3‐C10H16)(μ‐Cl)Cl}2]