Normalize an algorithm calls recursively itself with an argument of the wrong type

[petervanderbeken]

Normalize an algorithm calls itself with alg set to an Algorithm dictionary:

Return the result of running the normalize an algorithm algorithm, with the alg set to a new Algorithm dictionary whose name attribute is alg, and with the op set to op.

But the alg argument is defined as AlgorithmIdentifier, which means it must be either an object or a DOMString and doesn't include that dictionary type.