ref: speed up flagpole tests

[asottile-sentry]

$ time pytest tests/flagpole/
/Users/asottile/workspace/sentry/.venv/lib/python3.11/site-packages/phabricator/__init__.py:12: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
  __version__ = __import__('pkg_resources') \
============================== test session starts ==============================
platform darwin -- Python 3.11.8, pytest-8.0.0, pluggy-1.4.0
django: version: 5.0.7
rootdir: /Users/asottile/workspace/sentry
configfile: pyproject.toml
plugins: fail-slow-0.3.0, rerunfailures-11.0, json-report-1.5.0, metadata-3.1.1, time-machine-2.13.0, xdist-3.0.2, pytest_sentry-0.3.0, anyio-3.7.1, django-4.8.0, cov-4.0.0
collected 45 items                                                              

tests/flagpole/test_conditions.py ..........................              [ 57%]
tests/flagpole/test_evaluation_context.py .........                       [ 77%]
tests/flagpole/test_feature.py ..........                                 [100%]

============================== 45 passed in 4.22s ===============================

real	0m7.365s
user	0m4.001s
sys	0m0.634s
$ git apply patch
$ time pytest tests/flagpole/
/Users/asottile/workspace/sentry/.venv/lib/python3.11/site-packages/phabricator/__init__.py:12: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
  __version__ = __import__('pkg_resources') \
============================== test session starts ==============================
platform darwin -- Python 3.11.8, pytest-8.0.0, pluggy-1.4.0
django: version: 5.0.7
rootdir: /Users/asottile/workspace/sentry
configfile: pyproject.toml
plugins: fail-slow-0.3.0, rerunfailures-11.0, json-report-1.5.0, metadata-3.1.1, time-machine-2.13.0, xdist-3.0.2, pytest_sentry-0.3.0, anyio-3.7.1, django-4.8.0, cov-4.0.0
collected 45 items                                                              

tests/flagpole/test_conditions.py ..........................              [ 57%]
tests/flagpole/test_evaluation_context.py .........                       [ 77%]
tests/flagpole/test_feature.py ..........                                 [100%]

============================== 45 passed in 0.55s ===============================

real	0m3.489s
user	0m2.584s
sys	0m0.549s

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.13%. Comparing base (ae8a805) to head (f0933c6).
Report is 6 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #74949   +/-   ##
=======================================
  Coverage   78.13%   78.13%           
=======================================
  Files        6747     6747           
  Lines      301141   301141           
  Branches    51787    51787           
=======================================
+ Hits       235292   235294    +2     
+ Misses      59545    59541    -4     
- Partials     6304     6306    +2     

see 4 files with indirect coverage changes

[markstory]

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