Fix setCameraDrunkLevel(0) not stopping the camera shake

[Flashmyname]

Summary

The game drives the shake from every player ped's own drunk level. Other players and scripted peds are created with a copy of the local player's ped data, drunk level included, so a ped created while the level was non-zero keeps turning the shake back on, and once it is gone nothing turns it off.

Fixes #723

Test plan

crun setCameraDrunkLevel(255)
crun local x,y,z = getElementPosition(localPlayer) p = createPed(0, x+2, y, z)
crun setCameraDrunkLevel(0)   -- master: still shaking, getCameraDrunkLevel() is 0
crun destroyElement(p)        -- master: still shaking

Checklist

• Your code should follow the coding guidelines.
• Smaller pull requests are easier to review. If your pull request is beefy, your pull request should be reviewable commit-by-commit.