[BUG] .x and .y accessors do not reflect previous slicing.

[thomcom]

Describe the bug
When you slice a GeoSeries, the Union indexing only leaves offsets for the sliced members, but the underlying point and sub-offsets are not modified or copied. However, if you then later use a coordinate accessor like sliced.polygons.x, the .x accessor doesn't understand that the offsets have changed and returns the same indices regardless of which slice you are calling it on.

Steps/Code to reproduce bug

host_dataframe = geopandas.read_file(geopandas.datasets.get_path("naturalearth_lowres"))
gpu_dataframe = cuspatial.from_geopandas(host_dataframe)
polygons_first = gpu_dataframe['geometry'][0:10]
polygons_second = gpu_dataframe['geometry'][10:20]
cuspatial.core.spatial.distance.haversine_distance(
    polygons_first.polygons.x,
    polygons_first.polygons.y,
    polygons_second.polygons.x,
    polygons_second.polygons.y
)
print(polygons_first.polygons.x.head())
print(polygons_second.polygons.x.head())

0    180.000000
1    180.000000
2    179.364143
3    178.725059
4    178.596839
dtype: float64
0    180.000000
1    180.000000
2    179.364143
3    178.725059
4    178.596839

Expected behavior
The result of the two print results should be different .x values, reflecting different polygons.