0e66c24b37
This will require that entries for renamed files be updated so that they don't accidentally start being loaded under the new name later. It also prevents dead code entries from sticking around after their targets are removed. Using `throttledMapPromises` is probably not strictly necessary given the small number of entries in most lists, but since it already exists, we may as well use it here. Differential Revision: https://phabricator.services.mozilla.com/D150921