CurseForge Link
https://www.curseforge.com/minecraft/mc-mods/login-protection

Mod description

Small, simple, lightweight mod to protect the player during login from any harm.

Why would you like the mod added?
Am not sure if something like this already exists in the pack but I know that playing on mod packs give issues in multiplayer in terms of connecting to the world. People already appear in the world without being able to interact, they still see the dirt loading screen. In this time mobs can already attack and harm them and people die before they logged fully into the world. This might be frustrating and this mod prevents this.

Greetings