Rename participating_states to states for SNAP utility allowances

Simpler, clearer parameter name for the list of states that vary
SUA/LUA by household size.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: MaxGhenis

…household_size/participating_states.yaml …ty/limited/by_household_size/states.yamlpolicyengine_us/parameters/gov/usda/snap/income/deductions/utility/limited/by_household_size/participating_states.yaml renamed to policyengine_us/parameters/gov/usda/snap/income/deductions/utility/limited/by_household_size/states.yaml policyengine_us/parameters/gov/usda/snap/income/deductions/utility/limited/by_household_size/participating_states.yaml renamed to policyengine_us/parameters/gov/usda/snap/income/deductions/utility/limited/by_household_size/states.yaml

@@ -11,4 +11,4 @@ class snap_limited_utility_allowance_by_household_size(Variable):
     def formula(spm_unit, period, parameters):
         p = parameters(period).gov.usda.snap.income.deductions.utility.limited
         region = spm_unit.household("snap_utility_region_str", period)
-        return is_in(region, p.by_household_size.participating_states)
+        return is_in(region, p.by_household_size.states)

…household_size/participating_states.yaml …y/standard/by_household_size/states.yamlpolicyengine_us/parameters/gov/usda/snap/income/deductions/utility/standard/by_household_size/participating_states.yaml renamed to policyengine_us/parameters/gov/usda/snap/income/deductions/utility/standard/by_household_size/states.yaml policyengine_us/parameters/gov/usda/snap/income/deductions/utility/standard/by_household_size/participating_states.yaml renamed to policyengine_us/parameters/gov/usda/snap/income/deductions/utility/standard/by_household_size/states.yaml

@@ -11,4 +11,4 @@ class snap_standard_utility_allowance_by_household_size(Variable):
     def formula(spm_unit, period, parameters):
         p = parameters(period).gov.usda.snap.income.deductions.utility.standard
         region = spm_unit.household("snap_utility_region_str", period)
-        return is_in(region, p.by_household_size.participating_states)
+        return is_in(region, p.by_household_size.states)