Different response formats for zone data in field: properties.observationStations

[dsadosky]

Describe the bug
When retrieving information about a specific zone (fire and/or forecast), the majority of the time the observationStations for the zone is returned as an array of stations. Occasionally, (~200 of of 11,000+ zones) are returning properties.observationStations as an object instead of an array.

The normal/expected response (abbreviated) is (https://api.weather.gov/zones/forecast/ARZ026):

{
	"@context": {
		"@version": "1.1"
	},
	"id": "https://api.weather.gov/zones/forecast/ARZ026",
	"type": "Feature",
	"geometry": {},
	"properties": {
		"@id": "https://api.weather.gov/zones/forecast/ARZ026",
		"@type": "wx:Zone",
		"id": "ARZ026",
		"type": "public",
		"name": "Craighead",
		"effectiveDate": "2020-11-10T18:00:00+00:00",
		"expirationDate": "2220-11-10T18:00:00+00:00",
		"state": "AR",
		"cwa": [
			"MEG"
		],
		"forecastOffices": [
			"https://api.weather.gov/offices/MEG"
		],
		"timeZone": [
			"America/Chicago"
		],
		"observationStations": [
			"https://api.weather.gov/stations/KJBR",
			"https://api.weather.gov/stations/KMEM",
			"https://api.weather.gov/stations/KPOF",
			"https://api.weather.gov/stations/KUNO"
		],
		"radarStation": "NQA"
	}
}

For approximently 200 zones, instead of the properties.observationsStations being returned as an array of stations, it is being returned as an object.

The abnormal/unexpected response (abbreviated) from: https://api.weather.gov/zones/forecast/ARZ025

{
	"@context": {
		"@version": "1.1"
	},
	"id": "https://api.weather.gov/zones/forecast/ARZ025",
	"type": "Feature",
	"geometry": {},
	"properties": {
		"@id": "https://api.weather.gov/zones/forecast/ARZ025",
		"@type": "wx:Zone",
		"id": "ARZ025",
		"type": "public",
		"name": "Jackson",
		"effectiveDate": "2020-11-10T18:00:00+00:00",
		"expirationDate": "2220-11-10T18:00:00+00:00",
		"state": "AR",
		"cwa": [
			"LZK"
		],
		"forecastOffices": [
			"https://api.weather.gov/offices/LZK"
		],
		"timeZone": [
			"America/Chicago"
		],
		"observationStations": {
			"0": "https://api.weather.gov/stations/KBVX",
			"1": "https://api.weather.gov/stations/KBPK",
			"3": "https://api.weather.gov/stations/KELD",
			"4": "https://api.weather.gov/stations/KFSM",
			"12": "https://api.weather.gov/stations/KSRC",
			"13": "https://api.weather.gov/stations/KTXK"
		},
		"radarStation": "LZK"
	}
}