## Description
**Problem**
Previously, the implementation of building blocks was limited in
functionality: building blocks could not be placed into containers. This
restriction constrained building blocks to be solely draggable items on
the canvas, reducing their versatility and utility.
**Solution**
To address this limitation, we have improved the paste logic for
building blocks. The updated logic now allows building blocks to be
dropped into other containers.
**Key changes include:**
1. Simplification of the `pastingIntoWidgetId` determination process.
The paste logic previously had multiple conditions to determine this ID.
2. Direct passing of the parent widget ID into the
`pasteBuildingBlockWidgetsSaga` function, streamlining the process and
reducing complexity.
These enhancements significantly increase the flexibility of building
blocks, enabling more complex and nested designs.
Fixes#33606
## Automation
/ok-to-test tags="@tag.Templates, @tag.Widget"
### 🔍 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/9249397667>
> Commit: e1f72697bd1bc0fe827895a0f09228440f8be0a8
> Cypress dashboard url: <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=9249397667&attempt=1"
target="_blank">Click here!</a>
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [x] No
