`indentation_linter()` should support native pipe

[AshesITR]

lintr::lint(text = "a |>\n  foo()")
#> <text>:2:2: style: [indentation_linter] Indentation should be 0 spaces but is 2 spaces.
#>   foo()
#> ~^
lintr::lint(text = "a %>%\n  foo()")

^{Created on 2022-12-05 with reprex v2.0.2}