how about removing function last_plot?

plotly depends on ggplot2 which alreadly has loaded function last_plot(), so, maybe we can throw it away as ggridge did

Brief description of the problem

library(plotly)
#> Loading required package: ggplot2
#> 
#> Attaching package: 'plotly'
#> The following object is masked from 'package:ggplot2':
#> 
#>     last_plot
#> The following object is masked from 'package:stats':
#> 
#>     filter
#> The following object is masked from 'package:graphics':
#> 
#>     layout
plotly::last_plot
#> function () 
#> .store$get()
#> <bytecode: 0x7f9575ad7558>
#> <environment: namespace:plotly>
ggplot2::last_plot
#> function () 
#> .store$get()
#> <bytecode: 0x7f9575ad5cd8>
#> <environment: namespace:ggplot2>

^{Created on 2021-04-19 by the reprex package (v2.0.0)}

首先比较报告中展示的公共入口 plotly::last_plot 和 ggplot2::last_plot，然后检查 plotly 如何暴露或测试 last_plot。在移除重复项之前，确定现有的软件包行为和测试覆盖率；完成的标准是 plotly 不再屏蔽 ggplot2 的 last_plot，同时不破坏受支持的用法。