## Description
Few new functionalities has been added in this PR -
1. Systematic fix to avoid negative assertions when selectors are
undefined
2. Added helper to assert absence of "Add new page"
3. Added helper to assert add new of any entity ie Queries, JS
Related EE PR - https://github.com/appsmithorg/appsmith-ee/pull/4077
Fixes #`Issue Number`
_or_
Fixes `Issue URL`
> [!WARNING]
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._
## Automation
/ok-to-test tags=""
### 🔍 Cypress test results
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> If you modify the content in this section, you are likely to disrupt
the CI result for your PR.
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## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No
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