Fix error when calling GQL ciConfig endpoint with include:component

What does this MR do and why?

This is a backport MR of Fix serialization error on CI Lint with includi... (!154747 - merged) and Fix error when calling GQL ciConfig endpoint wi... (!153046 - merged).

Requested in #453955 (comment 1948774833).

Related to;

• Internal server error when using CiConf GraphQL... (#455376 - closed)
• Validate GitLab CI/CD configuration fails with ... (#453955 - closed)

Targeted release: https://gitlab.com/gitlab-org/gitlab/-/issues/467200+

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• This MR is backporting a bug fix, documentation update, or spec fix, previously merged in the default branch.
• The MR that fixed the bug on the default branch has been deployed to GitLab.com (not applicable for documentation or spec changes).
• This MR has a severity label assigned (if applicable).
• Set the milestone of the merge request to match the target backport branch version.
• This MR has been approved by a maintainer (only one approval is required).
• Ensure the e2e:package-and-test-ee job has either succeeded or been approved by a Software Engineer in Test.

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