chore(integration-tests): Add test for database options (#2707)

**What**
- Add integration test suite for database options
- Expose integration tests DB to additional options
- Add test for `idle_in_transaction_session_timeout`

integration-tests/helpers/use-db.js

@@ -78,7 +78,7 @@ const DbTestUtil = {
 const instance = DbTestUtil
 
 module.exports = {
-  initDb: async function ({ cwd }) {
+  initDb: async function ({ cwd, database_extra }) {
     const configPath = path.resolve(path.join(cwd, `medusa-config.js`))
     const { projectConfig, featureFlags } = require(configPath)
 
@@ -98,6 +98,7 @@ module.exports = {
         database: projectConfig.database_database,
         synchronize: true,
         entities,
+        extra: database_extra ?? {},
       })
 
       instance.setDb(dbConnection)
@@ -137,6 +138,7 @@ module.exports = {
         url: DB_URL,
         entities: enabledEntities,
         migrations: enabledMigrations,
+        extra: database_extra ?? {},
         name: "integration-tests",
       })