Fix display empty value if boolean instead of false on show page (#4468)

* default value boolean fixed

* fixed creation, fixed updating a value to false

* fixed default value for default value if boolean

* fixed tests

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-server/src/engine/metadata-modules/field-metadata/field-metadata.service.ts

@@ -300,10 +300,12 @@ export class FieldMetadataService extends TypeOrmQueryService<FieldMetadataEntit
       await fieldMetadataRepository.update(id, {
         ...updatableFieldInput,
         defaultValue:
-          // Todo: we need to handle default value for all field types. Right now we are only allowing update for SELECt
-          existingFieldMetadata.type !== FieldMetadataType.SELECT
+          // Todo: we handle default value for all field types.
+          ![FieldMetadataType.SELECT, FieldMetadataType.BOOLEAN].includes(
+            existingFieldMetadata.type,
+          )
             ? existingFieldMetadata.defaultValue
-            : updatableFieldInput.defaultValue
+            : updatableFieldInput.defaultValue !== null
               ? updatableFieldInput.defaultValue
               : null,
         // If the name is updated, the targetColumnMap should be updated as well