add garbage bags to evac shelter cleaning supplies

[dynst]

Summary

Content "Add chance of garbage bags in cleaning supplies for evac shelter"

Purpose of change

There were cleaning supplies for the shelter, but no garbage bags anywhere.

Describe the solution

35% chance of a box of garbage bags among the other cleaning supplies.

Describe alternatives you've considered

Maybe use a lower spawning chance than 35%?

Testing

Additional context

This complements eventually doing #75512

[GuardianDll]

Hmm, i thought the idea was to put all garbage into a garbage bag, did you mean to just provide a supply of this garbage bags? i'd suspect them to be elsewhere, not in the garbage bag itself oh, i should read the json better, nevermind

[dynst]

Can this be backported to 0.H? #70661

[GuardianDll]

it is not a bugfix, so no