docs: policy check

[albertorm95]

Documents:

• Docs: policy_check is not a command, but must be allowlisted for it to work #5739

[Copilot]

Pull request overview

Updates the documentation to cover the policy_check internal command and how it interacts with --gh-team-allowlist, aiming to prevent manual atlantis plan runs from skipping policy checks when team allowlists are enabled.

Changes:

• Documented policy_check as an available (internal) command and explained when it runs.
• Added guidance/warnings in multiple docs pages about allowlisting policy_check when using --gh-team-allowlist.
• Added example --gh-team-allowlist strings demonstrating required permissions.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
runatlantis.io/docs/server-configuration.md	Adds policy_check to the command list and a tip block for --gh-team-allowlist users.
runatlantis.io/docs/repo-and-project-permissions.md	Adds a warning about allowlisting policy_check to avoid skipping policy checks on manual plans.
runatlantis.io/docs/policy-checking.md	Adds an “Important” warning explaining why policy_check must be allowlisted with team allowlists.

[Copilot]

This snippet differs from the other pages by omitting the atlantis server prefix, which can confuse readers into pasting it as a shell command rather than a flag on the atlantis server invocation. Consider making this example consistent by including atlantis server --gh-team-allowlist=... (or labeling it explicitly as “flag value only”).

Suggested change

	--gh-team-allowlist="*:plan, *:policy_check, sre:apply"
	atlantis server --gh-team-allowlist="*:plan, *:policy_check, sre:apply"