Fix KNX issue if 0 kelvin is reported by device (#44392)
Fix KNX issue if 0 kelvin is reported by device (#44392)

Co-authored-by: Matthias Alphart <ece2ecb97ecdeb54df29175ed9a69b25e6712baf@alphart.net>
Co-authored-by: Franck Nijhof <13eb18b733a08718cb4c9e1db0ca6f4a03c9262b@frenck.nl>
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