Change medium state for filtering

[Teagan42]

Description:
Fixes the filtering for ISY994 fan nodes

Related issue (if applicable): fixes #5779

Pull request in home-assistant.github.io with documentation (if applicable): home-assistant/home-assistant.github.io#<home-assistant.github.io PR number goes here>

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• Documentation added/updated in home-assistant.github.io

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[mention-bot]

@Teagan42, thanks for your PR! By analyzing the history of the files in this pull request, we identified @robbiet480 and @w1ll1am23 to be potential reviewers.

[homeassistant]

Hi @Teagan42,

It seems you haven't yet signed a CLA. Please do so here.

Once you do that we will be able to review and accept this pull request.

Thanks!

[balloob]

Thanks! 🐬