<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **Chores**
- Updated GitHub Actions workflows to use `actions/checkout@v4` for
improved performance and reliability.
- Removed `fetch-depth` parameter to simplify checkout steps across
various workflows.
- Standardized quote usage for consistency in workflow files.
- **Documentation**
- Adjusted formatting and descriptions in workflow files for better
clarity and readability.
- **Refactor**
- Aligned multiple workflow files to follow a consistent structure and
naming convention.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
fetch-depth 0 causes the Github workflow to checkout the entire Git
history. This is not required. We only need to check out the head of the
commit. By default, actions/checkout has fetch-depth=1, hence removing
it from the workflow completely for simplicity.
On WDS PR's merge, we need to create a build for the release branch too
so that chromatic baselines is updated.
This PR updates the workflow to start a build on merge too.
Also, we can now remove build-storybook workflow as that is not needed
anymore since we will be building chroamtic on release also. We can use
`https://release--5f1e6db0ad879d0022744996.chromatic.com` to see the
storybook for release branch.
This PR adds the integration for chromatic which will help us catch
visual bugs in the WDS components.
The way it works is, the PR won't allowed to merge till reviewers
reviews all the changes in the components.
One thing to note is the workflow only works when there is a change in
design system files.
Fixes#21923
