Fix nullable being set to null for text field (#4239)

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

@@ -25,6 +25,7 @@ import { UpdateFieldInput } from 'src/metadata/field-metadata/dtos/update-field.
 import { WorkspaceMigrationFactory } from 'src/metadata/workspace-migration/workspace-migration.factory';
 import { computeObjectTargetTable } from 'src/workspace/utils/compute-object-target-table.util';
 import { generateMigrationName } from 'src/metadata/workspace-migration/utils/generate-migration-name.util';
+import { generateNullable } from 'src/metadata/field-metadata/utils/generate-nullable';
 
 import {
   FieldMetadataEntity,
@@ -102,6 +103,10 @@ export class FieldMetadataService extends TypeOrmQueryService<FieldMetadataEntit
         true,
         fieldMetadataInput.name,
       ),
+      isNullable: generateNullable(
+        fieldMetadataInput.type,
+        fieldMetadataInput.isNullable,
+      ),
       defaultValue:
         fieldMetadataInput.defaultValue ??
         generateDefaultValue(fieldMetadataInput.type),