chore: Using retrieve by id for fetching super admin permission group (#27898)

## Description
Fetching super admin permission group without user context check using
retrieveById.


#### Type of change
- Chore (housekeeping or task changes that don't impact user perception)

#### How Has This Been Tested?
- [x] Manual
- [x] JUnit

## Checklist:
#### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [x] Added `Test Plan Approved` label after Cypress tests were reviewed
- [x] Added `Test Plan Approved` label after JUnit tests were reviewed

app/server/appsmith-server/src/main/java/com/appsmith/server/helpers/ce/UserUtilsCE.java

@@ -204,7 +204,7 @@ public class UserUtilsCE {
                 .flatMap(instanceConfig -> {
                     JSONObject config = instanceConfig.getConfig();
                     String defaultPermissionGroup = (String) config.getOrDefault(DEFAULT_PERMISSION_GROUP, "");
-                    return permissionGroupRepository.findById(defaultPermissionGroup);
+                    return permissionGroupRepository.retrieveById(defaultPermissionGroup);
                 });
     }
 }