Census ADRIO returning scrambled results in some cases

[JavadocMD]

I noticed that, following the geo scopes integration to the Census ADRIO maker, the "demo/03-counties-GEO" vignette had gone from correct (left, commit f9889e5) to incorrect (right, commit 5d12231) (file history):

On investigation it became clear that the centroids attribute of the Census ADRIO maker was returning its results in a "scrambled" order (counties were being assigned the centroid of a different county).

Resolving this issue involves several sub-tasks:

• Fix this attribute,
• Investigate the other attributes in Census to see if they're vulnerable to this same issue and fix those if any,
• Write an integration test (as a devlog notebook) that tests (for a small number of nodes, e.g., five counties in Arizona) that the results provided by the ADRIOs are not only the correct type and shape, but that the data values themselves are correct (and in the correct order).

[JavadocMD]

This code snippet demonstrates the issue; "Method 1" duplicates the approach taken by the Census ADRIO maker currently.

from pandas import DataFrame

from epymorph.geography.us_census import CountyScope
from epymorph.geography.us_tiger import get_counties_geo

# Scope
scope = CountyScope.in_states_by_code(["AZ", "NM", "CO", "UT"], year=2020)
# Geo data
gdf = get_counties_geo(2020)
gdf.rename(columns={'GEOID': 'geoid'}, inplace=True)

# Method 1 (current approach): not sorted
df1_raw = gdf[gdf['geoid'].isin(scope.get_node_ids())]
df1 = DataFrame({
    'geoid': df1_raw['geoid'],
    'centroid': df1_raw['geometry'].apply(lambda x: x.centroid.coords[0]),
})
display(df1['centroid'][0:4])

# Method 2 (possible fix): merge into sort
df2_raw = DataFrame({'geoid': scope.get_node_ids()}).merge(gdf, how='left', on='geoid')
df2 = DataFrame({
    'geoid': df2_raw['geoid'],
    'centroid': df2_raw['geometry'].apply(lambda x: x.centroid.coords[0]),
})
display(df2['centroid'][0:4])

Result:

2      (-104.41195788796497, 34.34241351170314)
22       (-106.281555561785, 38.08055275484528)
24    (-111.24450979723022, 41.632253425796634)
30    (-105.74144255453645, 32.613144676719934)
Name: centroid, dtype: object

0    (-109.48884962242164, 35.395528796753005)
1     (-109.75126313669315, 31.87963708628258)
2     (-111.77052095590304, 35.83872482945673)
3      (-110.8116368639038, 33.79970236516231)
Name: centroid, dtype: object