OpenMW dialogue/greeting/voice filter doesn't accept negative Ai values for NPC's hello, alarm, fight, and flee

Just what the title says no more no less. Try making a top greeting 0 with filter Function hello == -10. And sethello -10 to given NPC. The NPC will never use the greeting. Try it now with vanilla engine and it will work. I used OpenMW version built from @Assumeru pipeline that fixes bug where OpenMW couldn't use negative values for NPC Ai. The filter bug is different from one Evil Eye fixed. https://gitlab.com/Assumeru/openmw/-/pipelines/251668285

New @Assumeru 's pipeline https://gitlab.com/Assumeru/openmw/-/pipelines/252177841 fixes all the issues with negative Ai values once and for all.