The OMLProcessor is a built-in system extension that comes with the platform. This extension allows OutSystems, to collect information to support decisions in further product developments.
As far as I know, it should not be republished.
I had a similar situation with Outdated OMLProcessor, and a support case was needed for OutSystems to fix this.
See also, https://www.outsystems.com/forums/discussion/68587/why-are-oml-processor-and-runtime-context-extensions-not-available/