ggplot to ggplotly does not accept variable alpha

I'm trying to convert a ggplot that has alpha in its aesthetics (it needs to be variable), which works perfectly in ggplot, but ggplotly() outputs an error.

set.seed(666)
y <- rpois(1000, 2.9)
table(y)

holdThis <- as.data.frame(table(y))
holdThis$cumTotal <- cumsum(holdThis$Freq)
holdThis$percentage <- (as.numeric(holdThis$Freq)/10000) * 100
holdThis$y <- as.numeric(as.character(holdThis$y))

p <- ggplot(holdThis, aes(x=y, y=Freq, alpha = Freq)) + geom_bar(stat='identity', fill= 'blue', color="black", size = .25) + scale_x_discrete(breaks = y)

ggplotly(p)

首先运行提供的可复现 R 示例和 ggplotly(p) 入口点，重点关注变量 alpha aesthetic 的转换。完成的标准是示例能够无错误地完成转换，并保留原始 ggplot 中所示的变量 alpha 行为。