[MC-213573] Account authentication happens on the render thread

Account authentication seems to be happening on the render thread when launching minecraft.

[TIME] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[TIME] [Render thread/INFO]: Setting user: [USER]