Insert NAN as a numericInput in DT::datatable in Shiny

Question

I need to put a NAN value in my table's cell, whose type is numeric. whenever I try to insert a Blank into a cell, the application converts it to a Zero number. My question is how can I provide my users with the ability of inserting NaN/NA value in shiny UI?

library(shiny)
library(DT)
 server <- function(input,output){
   rv <- reactiveValues(
     data = data.frame(iris)[c(1:10),]
   )
   
   output$table1 <- renderDT(
     datatable(rv$data, editable = TRUE
     )
   )
 }
 shinyApp(ui = DTOutput("table1"), server = server)