arrow

ARROW-17166: [R] [CI] force_tests() cannot return TRUE (#13680)

OOMing no longer occurs with large memory tests, so this PR no longer removes those. During the investigation, I uncovered a bug with `force_tests()` - which became the aim of the PR.  
~It looks like setting the docker `TZ` to `"MART"` triggers a fail in the Ubuntu CI jobs.~
~It turns out I misinterpreted the CI output and this was an issue with OOM in the large memory tests. See [comment](https://github.com/apache/arrow/pull/13680#issuecomment-1191873953).~

Authored-by: Dragoș Moldovan-Grünfeld <dragos.mold@gmail.com>
Signed-off-by: Jonathan Keane <jkeane@gmail.com>