CLI for Microsoft 365 app ID no longer usable

[cap601]

Earlier this week the multi-tenant registration for the CLI for Microsoft 365 was disabled (https://pnp.github.io/blog/post/changes-pnp-management-shell-registration/). This means:

• The microsoft365r_use_cli_app_id option is no longer useful
• The authentication vignette will need changing to not recommend using the above