fix: prevent tctl edit overwriting static file config

[nklaassen]

tctl create -f prevents overwriting the cluster_auth_preference, cluster_networking_config, or session_recording_config if their configuration is coming from a static config file. Any dynamic edits made to these resources would be overwritten the next time the auth server restarts, so a user trying to edit them using tctl is usually making a mistake. tctl create prevents this mistake unless the user explicitly passes --confirm which might be useful in some break-glass scenarios.

But unfortunately tctl edit does nothing to prevent edits to these resources and I have confused myself many times when my config later gets overwritten after a successful tctl edit. This PR updates tctl edit to do the same check and require the --confirm flag to edit any resources configured statically.

changelog: Added a warning to tctl edit about dynamic edits to statically configured resources

[aws-amplify-us-west-2]

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[public-teleport-github-review-bot]

@nklaassen See the table below for backport results.

Branch	Result
branch/v14	Failed
branch/v15	Create PR
branch/v16	Create PR
branch/v17	Create PR