Question about 1.14.2 Spawn chunks and iron farms

I have made a 200 villager iron farm in my spawn chunks in my 1.14.2 single player world. While I am in the spawn chunks the entity count is roughly 250 however after leaving the spawn chunks this number drops .

In older versions I would make an egg farm to fire eggs through a nether portal to keep the spawn chunks loaded however, I have found conflicting information on whether or not that is required anymore.

My question is do I need to do something similar such as an egg in 1.14.2 or will the iron golem farm keep working even if the entity count is lowered when I leave the spawn chunks.