save_code_now: Allow request creation if previous for origin is running
Previously, the save code now service was not allowing to create a new request for an origin if a previously created one for the same origin was currently running.
However, new commits might have been pushed to the origin while a loading task is running so this restriction does not make sense, especially for the new forge webhook receivers feature.
Related to #4548 (closed)
Migrated from D8841 (view on Phabricator)