Put version.ftl also behind new no-ident config option

[DL6ER]

What does this PR aim to accomplish?:

See title and related Discource topic (link below).

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[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/hide-dnsmasq-version/61830/8

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-ftl-v5-22-web-v5-19-and-core-v5-16-1-released/61999/1