chore(medusa, orchestration, utils, workflows-sdk): add transaction options support and cleanup (#6020)

* chore(medusa, orchestration, utils, workflows-sdk): add transaction options support and cleanup

packages/medusa/src/loaders/index.ts

@@ -45,7 +45,7 @@ async function loadLegacyModulesEntities(configModules, container) {
   for (const [moduleName, moduleConfig] of Object.entries(configModules)) {
     const definition = ModulesDefinition[moduleName]
 
-    if (!definition.isLegacy) {
+    if (!definition?.isLegacy) {
       continue
     }