Fix GetCreatorByAlias to be case-insensitive

src/Web/Features/Contents/Handlers/GetCreatorByAlias.cs

@@ -41,7 +41,7 @@ public class GetCreatorByAliasHandler(
 
         var creator = await context
             .Creators
-            .Where(c => EF.Functions.Like(c.Name, creatorName))
+            .Where(c => EF.Functions.ILike(c.Name, creatorName))
             .FirstOrDefaultAsync(ct);
 
         if (creator is null)