[Fix #8518] Fix Lint/ConstantResolution cop reporting offense for module and class definitions

[tejasbubane]

Closes #8518

---

Before submitting the PR make sure the following are checked:

• Wrote good commit messages.
• Commit message starts with [Fix #issue-number] (if the related issue exists).
• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• Added tests.
• Added an entry to the Changelog if the new code introduces user-observable changes. See changelog entry format.
• The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
• Run bundle exec rake default. It executes all tests and RuboCop for itself, and generates the documentation.

[bbatsov]

The changes look good, but your branch has to be rebased on top of the current master branch due to merge conflicts.

[tejasbubane]

Rebased @bbatsov

[koic]

Thanks!