V14: Fix member mapping (#16106)

* convert key to name before saving roles

* Rework MemberEditingService to convert keys

* Rename variable to groups

* Extract to variable

src/Umbraco.Cms.Api.Management/ViewModels/Member/CreateMemberRequestModel.cs

@@ -12,7 +12,7 @@ public class CreateMemberRequestModel : CreateContentRequestModelBase<MemberValu
 
     public required ReferenceByIdModel MemberType { get; set; }
 
-    public IEnumerable<string>? Groups { get; set; }
+    public IEnumerable<Guid>? Groups { get; set; }
 
     public bool IsApproved { get; set; }
 }

src/Umbraco.Cms.Api.Management/ViewModels/Member/MemberResponseModel.cs

@@ -25,5 +25,5 @@ public class MemberResponseModel : ContentResponseModelBase<MemberValueModel, Me
 
     public DateTime? LastPasswordChangeDate { get; set; }
 
-    public IEnumerable<string> Groups { get; set; } = [];
+    public IEnumerable<Guid> Groups { get; set; } = [];
 }

src/Umbraco.Cms.Api.Management/ViewModels/Member/UpdateMemberRequestModel.cs

@@ -12,7 +12,7 @@ public class UpdateMemberRequestModel : UpdateContentRequestModelBase<MemberValu
 
     public string? NewPassword { get; set; }
 
-    public IEnumerable<string>? Groups { get; set; }
+    public IEnumerable<Guid>? Groups { get; set; }
 
     public bool IsApproved { get; set; }