Feature request: Option for alt text for plotly plot in shiny app

I was recently trying to add alt text for a plotly-based animated plot within a shiny app. I saw that there is a comparatively recent option to add alt text via an alt argument in, e.g., package shiny's renderPlot(). I didn't see anything similar in R plotly. Is it possible something similar could be extended for renderPlotly()?

I was able to get alt text added to my plot via htmltools::tagAppendAttributes() in the UI code, although it took me a bit to get it (apparently) right.

Beginne damit, den Einstiegspunkt renderPlotly() nachzuverfolgen, und vergleiche das für shiny's renderPlot() beschriebene Verhalten des alt-Arguments. Der bestehende Workaround mit htmltools::tagAppendAttributes() zeigt das gewünschte Ergebnis; abgeschlossen bedeutet, dass eine gleichwertige Möglichkeit vorhanden ist, Alt-Text für plotly-Plots in einer shiny-App bereitzustellen.