[BUG]: GeoSeries tests use invalid data and rely on hard-coded data matching

[harrism]

Version

24.12

On which installation method(s) does this occur?

Docker, Conda, Source, Rapids-Compose

Describe the issue

The fixture data (gs and polys in conftest.py) includes invalid polygons. This should be fixed. Also, some of the tests compare against hard-coded values from the fixture data. This is brittle and should be fixed.

Some tests were xfailed in #1467

Minimum reproducible example

No response

Relevant log output

No response

Environment details

No response

Other/Misc.

No response