Improved Detox retries support

With Detox’s --retries, failed tests are re-run in new Jest processes. Each process gets its own report directory by default, so results end up in several folders and upload can’t build one report. Using a fixed report directory fixes that, but the retry run then overwrites the first run’s data for those specs, so Currents only shows the last attempt and retry history is lost.

Improved support for this flow could take the form of merging retry runs into one report in the reporter, or allowing the upload command to combine the last n report directories into a single run - so one Detox run in Currents has full retry history instead of scattered or overwritten results.

Interest in this is being tracked to help prioritise implementation.