docs: add tctl and Terraform methods for creating Access Lists

[kimlisa]

part of https://github.com/gravitational/teleport.e/issues/8271

Updates the doc on access list. The custom, jit, and standing access list creating guides now also adds guides to create list through tctl and terraform.

🛑 TODO:

• this needs to merge first: tctl acl update/create: support output terraform (dry-run) #69347
• after merging, determine what version terraform support will be released and update the docs (currently it says its available for v19.0)

[github-actions]

Amplify deployment status

Branch	Commit	Job ID	Status	Preview	Updated (UTC)
lisa/update-doc-acl	a0f51ee	2	✅SUCCEED	lisa-update-doc-acl	2026-08-06 07:15:18

---

Preview links for changed docs pages

• docs/pages/identity-governance/access-lists/custom-access-list.mdx — affected partials: tctl-acl-create-version.mdx, tctl-flags-note.mdx, tctl-output-terraform-intro.mdx, terraform-apply.mdx
• docs/pages/identity-governance/access-lists/guide.mdx — affected partial: editing-roles-warning.mdx
• docs/pages/identity-governance/access-lists/jit-access-list.mdx — affected partials: editing-roles-warning.mdx, tctl-acl-create-version.mdx, tctl-flags-note.mdx, tctl-output-terraform-intro.mdx, terraform-apply.mdx
• docs/pages/identity-governance/access-lists/standing-access-list.mdx — affected partials: editing-roles-warning.mdx, tctl-acl-create-version.mdx, tctl-flags-note.mdx, tctl-output-terraform-intro.mdx, terraform-apply.mdx

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[mmcallister]

In the JIT and Standing guides: the Terraform tab points to a Web UI step that no longer exists in the docs. In both jit-access-list.mdx and standing-access-list.mdx, the new Terraform tab says:

"On earlier versions of tctl, use the Web UI instead: the guided flow mirrors your input as a Terraform module, which you can copy at the final Deployment step."

But the Web UI tab in this same diff was rewritten to drop the old "Deploy the Access List" section entirely; it now just says "click Create Access List Now." There's no more mention of a Terraform-copy option at the Deployment step anywhere in the Web UI tab. So a reader on an old tctl version who follows that fallback instruction won't find what they're told to look for.

Either the Web UI Deployment step still has a "copy Terraform" option and that needs to stay documented in the webui tab, or it doesn't and this fallback sentence is stale and needs rewriting. I have Version: 18.10.3 nd am not sure how to roll my own cluster back to an earlier version to test it out.