Support multiple Column drop in R

This is a followup on SPARK-39895. The PR previously attempted to adjust implementation for R as well to match signatures but that part was removed and we only focused on getting python implementation to behave correctly.

Change supports following operations:

df <- select(read.json(jsonPath), "name", "age")

df$age2 <- df$age

df1 <- drop(df, df$age, df$name)
expect_equal(columns(df1), c("age2"))

df1 <- drop(df, df$age, column("random"))
expect_equal(columns(df1), c("name", "age2"))

df1 <- drop(df, df$age, df$name)
expect_equal(columns(df1), c("age2"))