Test: add unit tests for BarChart component #1801 (#1904)

* Add unit tests for BarChart component

- Added comprehensive test cases for BarChart component
- Tests cover rendering, data handling, and prop validation
- Follows project testing standards

* Add unit tests for BarChart component

* Add unit tests for BarChart component

* Fix linting issues

* Fixed unit tests for BarChart component

* Fixed unit tests for BarChart component By CodeRabbit

* Fixed unit tests for BarChart component By CodeRabbit

* Fix tests and make check issues

* Fixed unit tests for BarChart component

* Fix issues and add more tests

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Co-authored-by: Kate Golovanova <[email protected]>

Author: MohdWaqar98