More stateful tests found by randomly

[di]

List of test runs that expose a non-deterministic test result (failure) when run with a specific random seed (ordering).

To reproduce, use TESTARGS="--randomly-seed= -vvv" make tests before adding to this list.

Seeds:

• --randomly-seed=511478457 (https://github.com/pypi/warehouse/actions/runs/29442507769/job/87444902531)
• --randomly-seed=2144378614 (https://github.com/pypi/warehouse/actions/runs/29313673233/job/87023037977) - Guard unittest.mock.sentinel objects from mutation during tests #20274

[ewdurbin]

• --randomly-seed=511478457 (https://github.com/pypi/warehouse/actions/runs/29442507769/job/87444902531)

seems to be related to DNS resolution... though its not at all clear why the lines reported as uncovered... are reported as such.

• --randomly-seed=2144378614 (https://github.com/pypi/warehouse/actions/runs/29313673233/job/87023037977)

appears to be due to mutation of sentinels by the code under test, see #20274.