gh-101446: Change repr of collections.OrderedDict

[sobolevn]

Now it is:

>>> from collections import OrderedDict
>>> OrderedDict({1: 'a', 2: 'b'})
OrderedDict({1: 'a', 2: 'b'})

Openning this as a draft to see what tests will fail :)

• Issue: OrderedDict dict/list representation #101446

[Gouvernathor]

Out of curiosity, why not using super().repr() instead of recreating a whole new dict ? Wouldn't it save quite some time ?