Use custom video image for Selenoid

What does this MR do and why?

Adds a custom image for video recording for Selenoid and defaults that and the chrome browser image.

Counterpart MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120672

Part of: https://gitlab.com/gitlab-com/gitlab-OKRs/-/work_items/2299, https://gitlab.com/gitlab-org/quality/quality-engineering/team-tasks/-/issues/1526

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.