chore(): Downgrade mikro orm (performance regression) (#13680)

**What**
After lot of investigation, we finally found one of our performance regerssion point (see [here](https://github.com/mikro-orm/mikro-orm/issues/6905)), this pr downgrade mikro orm and move the strategy back to select in where needed

packages/core/utils/src/dal/mikro-orm/mikro-orm-repository.ts

@@ -465,7 +465,7 @@ export function mikroOrmBaseRepositoryFactory<const T extends object>(
         if (findOptions_.options.limit != null || findOptions_.options.offset) {
           // TODO: from 7+ it will be the default strategy
           Object.assign(findOptions_.options, {
-            strategy: LoadStrategy.BALANCED,
+            strategy: LoadStrategy.SELECT_IN,
           })
         }
       }
@@ -494,7 +494,7 @@ export function mikroOrmBaseRepositoryFactory<const T extends object>(
         if (findOptions_.options.limit != null || findOptions_.options.offset) {
           // TODO: from 7+ it will be the default strategy
           Object.assign(findOptions_.options, {
-            strategy: LoadStrategy.BALANCED,
+            strategy: LoadStrategy.SELECT_IN,
           })
         }
       }