## Description
**Problem**
While we don't have the configuration interface for blocks, we should
make them available as we have other regular widgets, but we shouldn't
promote them for new users, since they are not able to easily modify
them.
Remove the building blocks empty state that is creating confusion.
**Solution**
1. Move the building blocks group to the bottom of the widget sidebar
2. Adjust tests to suit new demands
Fixes#34964
## Automation
/ok-to-test tags="@tag.IDE, @tag.Widget, @tag.Templates"
### 🔍 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/10187244230>
> Commit: e0aac0ea572e34716e8613a272c5ba0cadbd6fde
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=10187244230&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.IDE, @tag.Widget, @tag.Templates`
> Spec:
> <hr>Wed, 31 Jul 2024 21:39:07 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
- **New Features**
- Simplified the onboarding component to display static content instead
of dynamic behavior based on application state.
- **Bug Fixes**
- Updated test cases for the onboarding component to ensure it does not
render in preview mode, enhancing accuracy in expected behavior.
- Revised tests to reflect changes in the visibility of the suggested
widgets based on feature flag settings.
- **Chores**
- Minor reorganization of import statements and constants for clarity
without affecting functionality.
- Streamlined the visibility logic of suggested widgets by removing
unnecessary feature flag dependencies.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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