Fix CI/CD analyzer crashes

[subzero911]

Fixes #1029 (comment)

remove explicit WidgetBuilder type

---

Pull Request Checklist

• If the changes are being made to code, ensure the version in pubspec.yaml is updated.
• Increment the major/minor/patch/patch-count, depending on the complexity of change
• Add the necessary unit tests to ensure the coverage does not drop
• Update the Changelog to include all changes made in this PR, organized by version
• Run the melos run set_version command from the root directory
• Include the necessary reviewers for the PR
• Update the docs if there are any API changes or additions to functionality

[subzero911]

@pavanpodila I made a new PR to check this.

This error disappeared.
But still got this error:

[subzero911]

Something wrong with your CI/CD.
It treats warnings like fatal errors.

[subzero911]

by the way, docs are not working without library directive

[pavanpodila]

minor analysis issues to fix and we are good to merge

[subzero911]

hey, what you doing?!
I'm still testing!

[subzero911]

@pavanpodila revert it back