## Description
Why did this PR appear? I wanted to replace the icons from `ads-old`
with the icons from `ads`. After that, I had to fix some affected
components in `ads-old` and in the main app. In the process, I
discovered that a large amount of code is simply not being used.
## Automation
/ok-to-test tags="@tag.All"
### 🔍 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/10419944222>
> Commit: 86491f43aff37e34468fb7dc32722b9ef2ec60c9
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=10419944222&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Fri, 16 Aug 2024 13:28:03 UTC
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [x] No
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Improved precision in UI element targeting for enhanced test
reliability.
- Broadened icon options within the FilePickerComponent for greater
flexibility.
- **Improvements**
- Shifted component imports to a centralized design system for better
consistency.
- Simplified prop structures for the Button component to enhance
clarity.
- Enhanced validation utilities available for form handling and input
validation.
- **Bug Fixes**
- Enhanced robustness of element locators, reducing potential UI
interaction issues.
- **Refactor**
- Adjusted component properties to align with updated design guidelines,
promoting semantic usage.
- Consolidated exports to emphasize type definitions and utility
functions for better maintainability.
- **Chores**
- Cleaned up imports and updated code structure for improved
maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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