[1.1.101] LuaEntity::set_request_slot() won't allow filters with a count of 0 on requester chests

[SpeckledFleebeedoo]

When trying to set a requester chest request to count 0 using LuaEntity::set_request_slot(), the game throws an error: count must be positive, while a count of 0 can be set manually just fine. Expected behaviour would be to allow a count of 0.

Issue seems to be a regression of 68731, and was apparently reintroduced by the fix for 104886

[boskid]

Thanks for the report. Issue is now fixed for 1.1.107