refactor: change ConvertBase64UriToImage from extension method to static method

Foxnouns.Backend/Extensions/ImageObjectExtensions.cs

@@ -10,7 +10,7 @@ using SixLabors.ImageSharp.Processing.Processors.Transforms;
 
 namespace Foxnouns.Backend.Extensions;
 
-public static class AvatarObjectExtensions
+public static class ImageObjectExtensions
 {
     private static readonly string[] ValidContentTypes = ["image/png", "image/webp", "image/jpeg"];
 
@@ -39,7 +39,7 @@ public static class AvatarObjectExtensions
     ) => await objectStorageService.RemoveObjectAsync(CreateFlagInvocable.Path(hash), ct);
 
     public static async Task<(string Hash, Stream Image)> ConvertBase64UriToImage(
-        this string uri,
+        string uri,
         int size,
         bool crop
     )

Foxnouns.Backend/Jobs/CreateFlagInvocable.cs

@@ -26,7 +26,8 @@ public class CreateFlagInvocable(
 
         try
         {
-            var (hash, image) = await Payload.ImageData.ConvertBase64UriToImage(
+            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+                Payload.ImageData,
                 size: 256,
                 crop: false
             );

Foxnouns.Backend/Jobs/MemberAvatarUpdateInvocable.cs

@@ -39,7 +39,11 @@ public class MemberAvatarUpdateInvocable(
 
         try
         {
-            var (hash, image) = await newAvatar.ConvertBase64UriToImage(size: 512, crop: true);
+            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+                newAvatar,
+                size: 512,
+                crop: true
+            );
             var prevHash = member.Avatar;
 
             await objectStorageService.PutObjectAsync(Path(id, hash), image, "image/webp");

Foxnouns.Backend/Jobs/UserAvatarUpdateInvocable.cs

@@ -39,7 +39,11 @@ public class UserAvatarUpdateInvocable(
 
         try
         {
-            var (hash, image) = await newAvatar.ConvertBase64UriToImage(size: 512, crop: true);
+            var (hash, image) = await ImageObjectExtensions.ConvertBase64UriToImage(
+                newAvatar,
+                size: 512,
+                crop: true
+            );
             image.Seek(0, SeekOrigin.Begin);
             var prevHash = user.Avatar;