fix(backend): make API types internal

backend/src/Socialize.Api/Modules/Workspaces/Handlers/GetWorkspaceMembers.cs

@@ -8,7 +8,7 @@ using Socialize.Api.Modules.Workspaces.Data;
 
 namespace Socialize.Api.Modules.Workspaces.Handlers;
 
-public record WorkspaceMemberDto(
+internal record WorkspaceMemberDto(
     Guid Id,
     string DisplayName,
     string Email,
@@ -16,7 +16,7 @@ public record WorkspaceMemberDto(
     string RelationshipCategory,
     IReadOnlyCollection<string> Roles);
 
-public class GetWorkspaceMembersHandler(
+internal class GetWorkspaceMembersHandler(
     AppDbContext dbContext,
     AccessScopeService accessScopeService)
     : EndpointWithoutRequest<IReadOnlyCollection<WorkspaceMemberDto>>