[R] Document exceptions to function binding support

[asfimport]

Some examples were added in ARROW-15011 but we need to (at a minimum) go through all of the bindings and look for arrow_not_supported and other checks where there is an argument we don't support or don't handle exactly the same as in R.

Reporter: Neal Richardson / @nealrichardson
Assignee: Neal Richardson / @nealrichardson

_{Note: This issue was originally created as ARROW-17667. Please see the migration documentation for further details.}