## Description
Refactoring to make calls to construct new `ResponseDTO` objects, be
simpler. We aren't using the `ResponseDTO(int status, T data, String
message)` signature with non-`null` value for `message`, so this is
baggage.
I'm not removing that signature in this PR, but that'll come in the next
one. After these changes flow into EE and I migrate the usages there as
well. No need to hurry, slow but steady. 🙂
## Automation
/test sanity
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!TIP]
> 🟢🟢🟢 All cypress tests have passed! 🎉🎉🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/13425590614>
> Commit: 486a4d04de9f68e445d41006304f57af2b2ecafa
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=13425590614&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.Sanity`
> Spec:
> <hr>Thu, 20 Feb 2025 01:37:27 UTC
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **Refactor**
- Standardized backend response handling across numerous endpoints for
improved clarity and consistency.
- Enhanced the internal response construction process to ensure reliable
and maintainable operations without impacting any end-user
functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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