`-t` works on both old and new Docker versions, so it's best to use that.

We do not let bridges update config files, so generation cannot happen.
We don't want the bridge to manage the config file anyway.

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

Related to:
- https://github.com/mautrix/meta/releases/tag/v0.4.0
- https://mau.fi/blog/2024-09-mautrix-release/

It seems like the new version does not support a `/metrics` endpoint.
We skip keep the Ansible variables, but they're not doing anything.

* mautrix-meta: enable spaces; add a hint into the display name

* use the meta mode to determine displayname suffix

* Allow for people to easily unset the mautrix-meta displayname suffix

Previously, unsetting `matrix_mautrix_meta_messenger_bridge_displayname_suffix`
or (`matrix_mautrix_meta_instagram_bridge_displayname_suffix`) variable would
make you end up witha trailing space in `displayname`.

It's possible that mautrix-meta trims this, but I haven't checked. It's
better not to risk it anyway.

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

Related to: https://github.com/mautrix/facebook/issues/332

Fixes: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3138