Enable no-zero-fractions rule

[XhmikosR]

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Should fail and help us identify places where we should use toFixed().

Refs https://github.com/pi-hole/pi-hole/issues/3362

/CC @DL6ER feel free to push to this branch and related patches and see if it fixes https://github.com/pi-hole/pi-hole/issues/3362 🙂

[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-5-1-released/35577/1