pyoxidizer: disable the test for disabled & broken extensions help
The test is a bit fragile and the feature is significantly broken for 3rd party
extension already. So we disable that section with a comment about why and what
is needed.
Differential Revision: https://phab.mercurial-scm.org/D11304
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true