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3f77737a - Remove public preview markers for Copilot Coding Agent (now GA) (#58494)

Remove public preview markers for Copilot Coding Agent (now GA) (#58494) Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: timrogers <116134+timrogers@users.noreply.github.com> Co-authored-by: Tim Rogers <me@timrogers.co.uk> Co-authored-by: Sarita Iyer <66540150+saritai@users.noreply.github.com> Co-authored-by: Tim Rogers <timrogers@github.com>