chore: added downstream error code and msg to sentry (#28666)

> 	This PR adds more fields to the sentry error logs.

#### PR fixes following issue(s)
Fixes #28665 


#### Type of change

- Chore (housekeeping or task changes that don't impact user perception)

## Testing
>
#### How Has This Been Tested?
> Please describe the tests that you ran to verify your changes. Also
list any relevant details for your test configuration.
> Delete anything that is not relevant
- [ ] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
>
>
#### Test Plan
> Add Testsmith test cases links that relate to this PR
>
>
#### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
>
>
>
## Checklist:
#### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] 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
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed

app/server/appsmith-server/src/main/java/com/appsmith/server/exceptions/GlobalExceptionHandler.java

@@ -89,6 +89,8 @@ public class GlobalExceptionHandler {
             if (baseError.getErrorAction() == AppsmithErrorAction.LOG_EXTERNALLY) {
                 Sentry.configureScope(scope -> {
                     baseError.getContextMap().forEach(scope::setTag);
+                    scope.setExtra("downstreamErrorMessage", baseError.getDownstreamErrorMessage());
+                    scope.setExtra("downstreamErrorCode", baseError.getDownstreamErrorCode());
                 });
                 final User user = new User();
                 user.setEmail(baseError.getContextMap().getOrDefault(MDCFilter.USER_EMAIL, "unknownUser"));