Bloop rifle fails on `???` unimplemented cases when several processes try to create Bloop at once

[Gedochao]

https://github.com/scalacenter/bloop/blob/main/bloop-rifle/src/main/scala/bloop/rifle/internal/Operations.scala#L310
Hard to debug this further, since I'm running into the ???

Relevant to:

• Improve handling for parallel Scala CLI runs VirtusLab/scala-cli#3399
• ArrayIndexOutOfBoundsException when running more than one process in parallel VirtusLab/scala-cli#2034
• FileAlreadyExistsException on several parallel builds of the same project with Scala CLI #2549

CC @tgodzik