chore: sentry issue fix #29551 (#29552)

## Description
Fixes the null errors from the convertWebworkerSpansToRegularSpans
function.

#### PR fixes following issue(s)
Fixes #29551
#### Type of change
- Chore (housekeeping or task changes that don't impact user perception)

## Testing
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#### How Has This Been Tested?

- [ ] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
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>
#### 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
- [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
- [ ] 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


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Refactor**
- Improved the stability of the worker service by handling potential
undefined properties more gracefully.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/utils/WorkerUtil.ts

@@ -184,7 +184,7 @@ export class GracefulWorkerService {
       span &&
         convertWebworkerSpansToRegularSpans(
           span,
-          responseData.webworkerTelemetry,
+          responseData?.webworkerTelemetry,
         );
       return responseData;
     } finally {