Improve error message when comparing two `types.SimpleNamespace` objects

[sobolevn]

Feature or enhancement

Following #136109 (comment)

Old error message:

In [1]: from types import SimpleNamespace
In [2]: a = SimpleNamespace(a=1, b=2)
In [3]: b = SimpleNamespace(a=1, b=3)
In [4]: a < b
TypeError: '<' not supported between instances of 'dict' and 'dict'

New error message:

Linked PRs

• gh-136193: Improve TypeError msg when comparing two SimpleNamespaces #136195