fix(): workflow engine migration issue (#13629)

**What**
The extension creation have been pushed by mistake

packages/modules/workflow-engine-inmemory/src/migrations/Migration20250819104213.ts

@@ -5,13 +5,6 @@ export class Migration20250819104213 extends Migration {
     this.addSql(
       `CREATE INDEX IF NOT EXISTS "IDX_workflow_execution_run_id" ON "workflow_execution" (run_id) WHERE deleted_at IS NULL;`
     )
-
-    this
-      .addSql(`CREATE EXTENSION IF NOT EXISTS pgcrypto; -- required for gen_random_uuid()
-`)
-    this.addSql(
-      `ALTER TABLE "workflow_execution" ALTER COLUMN "id" SET DEFAULT 'wf_exec_' || encode(gen_random_bytes(6), 'hex');`
-    )
   }
 
   override async down(): Promise<void> {