ComfyFactorio/modules/no_deconstruction_of_neutral_entities.lua

local blacklist = {
    ['cliff'] = true,
    ['item-entity'] = true
}

local function on_marked_for_deconstruction(event)
    local entity = event.entity
    if not entity.valid then
        return
    end
    if not event.player_index then
        return
    end
    if entity.force.name ~= 'neutral' then
        return
    end
    if blacklist[entity.type] then
        return
    end
    entity.cancel_deconstruction(game.players[event.player_index].force.name)
end

local Event = require 'utils.event'
Event.add(defines.events.on_marked_for_deconstruction, on_marked_for_deconstruction)