Create fake hidden fields group (#18525)

## Demo


https://github.com/user-attachments/assets/43f31c43-fe37-4553-ad42-fc97a948d6ea

## Ungrouped fields

<img width="3456" height="2160" alt="CleanShot 2026-03-10 at 13 52
57@2x"
src="https://github.com/user-attachments/assets/13d1db63-59ac-4e2b-8950-fccf430176c4"
/>

packages/twenty-server/src/engine/metadata-modules/page-layout-widget/dtos/fields-configuration.dto.ts

@@ -42,4 +42,9 @@ export class FieldsConfigurationDTO implements FieldsConfiguration {
   @ValidateNested()
   @Type(() => NewFieldDefaultConfigurationDTO)
   newFieldDefaultConfiguration: NewFieldDefaultConfigurationDTO | null;
+
+  @Field(() => Boolean, { nullable: true })
+  @IsOptional()
+  @IsBoolean()
+  shouldAllowUserToSeeHiddenFields?: boolean;
 }