Hijacking for visiblity: Is there a way of mastering pictures for "real" HDR--not the fake compressed dynamic range crap, but with the right software switches

Hijacking for visiblity: Is there a way of mastering pictures for "real" HDR--not the fake compressed dynamic range crap, but with the right software switches to "turn on" the magic high dynamic range mode through the OS? HDR video specifically has a metadata tag that allows the stream to be correctly viewed on your fancy TV by turning on all the right hardware and software "HDR switch"--like increasing max brightness to the set luminance value in the metadata, etc. For HEIC pictures taken on iPhone, the right switches are turned on in iOS and macOS. Wondering if it's possible to create pictures from my regular sony a7r4 with those metadata tags so it can look cool on fancy displays. I've literally asked everywhere including my workspace Slack (big company) and nobody knows. The only hack I know that works is making a freaking single-frame HDR video out of the picture file.