Premiere Pro does not have Dolby Vision export, and considering Adobe dropped other Dolby licenses (like Dolby Audio) in 2018, I don't particularly expect Adobe to add Dolby Vision support anytime soon, but hey, you never know.
Per your post, keep in mind Dolby Vision isn't fully equatable to HLG. One is an HDR format (DV), the other is a gamma transfer function (HLG). For now in Premiere, you'd be limited to the HDR10 format.
While I admittedly don't work with HDR content myslf, Dolby Vision, to the best of my knowledge, uses PQ gamma (which Premiere does also support). So, while you wouldn't have the specific Dolby Vision format and metadata, you could make an export in the HDR10 format export that uses the Rec 2100 PQ color space.
HDR workflows have a bunch of considerations, this is a decent (albeit a bit dated) article on that for Premiere: https://helpx.adobe.com/premiere-pro/using/hdr-workflows.html