[Fix #8354] Fix Style/CaseLikeIf to handle regexp named captures

[dmytro-savochkin]

Fixes #8354.
Fixes #8541.

---

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.

[marcandre]

If #8510 is merged first, it would be best to use that instead of doing the parsing with a regexp

[bbatsov]

As it's merged now, I guess we should update this PR.

[dmytro-savochkin]

As it's merged now, I guess we should update this PR.

updated

[koic]

@dmytro-savochkin This change looks good to me. Can you rebase and update the changelog with the latest master branch? I'm sorry for taking up your time 💦

[dmytro-savochkin]

@dmytro-savochkin This change looks good to me. Can you rebase and update the changelog with the latest master branch? I'm sorry for taking up your time 💦

@koic, no problem, updated.

[koic]

@dmytro-savochkin Thank you!