`spaces_inside_linter()` doesn't lint spaces after `[[`

[IndrajeetPatil]

library(lintr)

lint(
  text = "x[[ 1L]]",
  linters = spaces_inside_linter()
)

lint(
  text = "x[[1L ]]",
  linters = spaces_inside_linter()
)
#> <text>:1:6: style: [spaces_inside_linter] Do not place spaces before square brackets.
#> x[[1L ]]
#>      ^

lint(
  text = "x[[ 1L ]]",
  linters = spaces_inside_linter()
)
#> <text>:1:7: style: [spaces_inside_linter] Do not place spaces before square brackets.
#> x[[ 1L ]]
#>       ^

^{Created on 2022-10-11 with reprex v2.0.2}

[IndrajeetPatil]

With #1678

library(lintr)

lint(
  text = "x[[ 1L]]",
  linters = spaces_inside_linter()
)
#> <text>:1:4: style: [spaces_inside_linter] Do not place spaces after square brackets.
#> x[[ 1L]]
#>    ^

^{Created on 2022-10-11 with reprex v2.0.2}