Unserializable job status still generates dedicated log files

The problem is that this generate files which might not be expected (there won't be any associated status). For example it can potentially generate a lot of files for asynchronous renderer jobs which are not serializable specifically to avoid generating too much files.

It was done like this since it's better in term of memory when the job produces a lot of log but on the other hand it produce so many files with very active jobs like async rendering that it can crush the maximum number of inodes on Linux.