Tidy remaining sample and parser review feedback

Root cause: a few low-risk review comments remained open after the provider cleanup even though the behavior-preserving fixes were straightforward.

Alphabetize the sample provider switch and make the Core/Bing filtering logic explicit so the outstanding review feedback matches the current implementation.

Author: niemyjski

samples/Example.Web/Program.cs

@@ -130,13 +130,6 @@ static bool TryCreateGeocoder(string provider, ProviderOptions options, out IGeo
 {
     switch (provider.Trim().ToLowerInvariant())
     {
-        case "google":
-            geocoder = String.IsNullOrWhiteSpace(options.Google.ApiKey)
-                ? new GoogleGeocoder()
-                : new GoogleGeocoder(options.Google.ApiKey);
-            error = null;
-            return true;
-
         case "azure":
             if (String.IsNullOrWhiteSpace(options.Azure.ApiKey))
             {
@@ -161,6 +154,13 @@ static bool TryCreateGeocoder(string provider, ProviderOptions options, out IGeo
             error = null;
             return true;
 
+        case "google":
+            geocoder = String.IsNullOrWhiteSpace(options.Google.ApiKey)
+                ? new GoogleGeocoder()
+                : new GoogleGeocoder(options.Google.ApiKey);
+            error = null;
+            return true;
+
         case "here":
             geocoder = default!;
             if (String.IsNullOrWhiteSpace(options.Here.ApiKey))

src/Geocoding.Core/Serialization/TolerantStringEnumConverter.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
@@ -58,11 +59,12 @@ public override void Write(Utf8JsonWriter writer, TEnum value, JsonSerializerOpt
 
     private static TEnum GetFallbackValue()
     {
-        foreach (string name in Enum.GetNames(EnumType))
-        {
-            if (String.Equals(name, "Unknown", StringComparison.OrdinalIgnoreCase))
-                return (TEnum)Enum.Parse(EnumType, name);
-        }
+        string? unknownName = Enum.GetNames(EnumType)
+            .Where(name => String.Equals(name, "Unknown", StringComparison.OrdinalIgnoreCase))
+            .FirstOrDefault();
+
+        if (unknownName is not null)
+            return (TEnum)Enum.Parse(EnumType, unknownName);
 
         return default;
     }

src/Geocoding.Microsoft/BingMapsGeocoder.cs

@@ -1,6 +1,7 @@
 using System.Globalization;
 using System.Net;
 using System.Net.Http;
+using System.Linq;
 using System.Text;
 using System.Text.Json;
 
@@ -252,20 +253,17 @@ protected virtual IEnumerable<BingAddress> ParseResponse(Json.Response response)
             if (locations.IsNullOrEmpty())
                 continue;
 
-            foreach (var location in locations)
+            foreach (var location in locations.Where(location => location?.Point?.Coordinates is { Length: >= 2 }
+                && location.Address is not null
+                && !String.IsNullOrWhiteSpace(location.Address.FormattedAddress)))
             {
-                if (location.Point is null || location.Address is null)
-                    continue;
-
-                var coordinates = location.Point.Coordinates;
-                if (coordinates is null || coordinates.Length < 2 || String.IsNullOrWhiteSpace(location.Address.FormattedAddress))
-                    continue;
+                var coordinates = location!.Point!.Coordinates!;
 
                 if (!Enum.TryParse(location.EntityType, out EntityType entityType))
                     entityType = EntityType.Unknown;
 
                 list.Add(new BingAddress(
-                    location.Address.FormattedAddress!,
+                    location.Address!.FormattedAddress!,
                     new Location(coordinates[0], coordinates[1]),
                     location.Address.AddressLine,
                     location.Address.AdminDistrict,