Added recommended rules for testing library
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **New Features**
- Added `data-testid` attributes across various components for improved
test identification.
- **Tests**
- Enhanced test cases with asynchronous handling (`async`/`await`) for
more reliable user interaction simulations.
- Transitioned to using `getByTestId` instead of `queryByTestId` for
better assertion reliability in tests.
- Added `await` before the `userEvent.click(el)` statement in the
ChartWidget test file.
- Updated the destructured variable names from `queryByTestId` to
`getByTestId` in the DividerWidget test file for improved clarity.
- Added an import for `screen` from "@testing-library/react" and updated
element querying in the TabsWidget test file.
- **Chores**
- Updated ESLint configurations to include testing-library plugins and
rules, improving code quality and consistency in test files.
- Removed unnecessary `cleanup` function calls after tests, following
best practices for test cleanup.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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