Fixes duplicate <meta name="description"> tags on thread pages when meta description auto-fix is enabled. Reported by @briansol.
Bug Fix
Thread pages no longer produce two meta description tags. The addon now replaces XF's default tag instead of adding a second one alongside it. SEO tools (ahrefs, etc.) will no longer flag duplicate meta descriptions.
Well, that was the expected result. Two forums, two sold F's. Time to do a few basics and just accept that fact that forum posts are RARELY created with SEO in mind.