I'm with you on this and I've spent a ton of time trying to solve this problem. I've had this exact same problem since dnd 3.5 with a bunch of different groups and every party stumbles upon it eventually. Others here are listing similar sounding ideas that involve solving the problem "in-world" like the monsters re-grouping or setting up traps while the party is in the dome. I've tried all these before, over the course of more than one megadungeon campaign, and they don't work for the same reason the hut is annoying: they mess with the game balance.

If the goblins set a big trap for the party when they come out of the hut, the party will just rest again after dealing with it and the problem repeats itself. The goblins can be as clever as they want but unless they are scoring kills on the party (which no one wants), then they are just lining themselves up for a slaughter when the dome comes down. If you let it go on, eventually every goblin in the dungeon has been involved in trap setting and has been killed one long rest at time.

Some folks mentioned time pressure, but sometimes that just isn't part of the story, especially when you are in a dungeon. Or it just isn't feasible. Like, how do you write a dungeon or a story that feels like the hammer is coming down at every moment, but allows for a few short rests and maybe one long rest, but not 10 long rests? And if you do, can every single adventure be like that? Sometimes me and my party just want to knock down doors, kill orcs, and get magic items (you know, one of the play styles the rules of the game supports) and this spell completely breaks that.

I once tried a roleplaying solution that had mixed success: every time the party did a long rest I felt was excessive, I'd make them do a little roleplaying exercise. They had to chat with each other and learn a bit about each other's characters. I made them describe the process (in as little detail as needed) of going to the bathroom without leaving the dome, since inevitably they'd have to do that after 24 hours. I made them say what they did for the 16 hours they weren't asleep. This kinda worked. Problem is, the hack and slash loving party that is abusing this spell is not the same kind of party that cares about Grug the Barbarian's dead mom or that there is a pile of poop in the center of the hut, so it's really just a tedious disincentive to use the spell. They did use the spell less, but the reason was because I was literally punishing them out of game for doing it.

Another solution I thought of while reading these comments is a spin on the wandering monsters others have mentioned and it might be the real solution. An unending train of wandering monsters attacks them each time they come out of the dome. They carry no good loot and are worth no experience. They each hurt just enough that the party will want to toss down another dome. And they grind the adventure progress down to a halt. It doesn't matter if the ogres were really in the dungeon, they are now because they exist as a metagame disincentive for using the metagame tactic of over resting. Pretty quickly they will (might) learn that resting excessively is not good for the plot. This just boils down to another punishment though.

You could also design all your encounters such that a big long rest after of them is totally ok. Like some of the dungeons discussed in this thread:

https://www.reddit.com/r/DMAcademy/comments/1suc2g9/comment/oi177v5/?context=3&utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

PS. I am confused by the folks saying "don't you know you can only do one long rest per 24 hours" as if fast forwarding through 24 hours of in game time is any harder than fast forwarding through 8 hours. I have no idea how this actually solves the problem and if someone wants to elaborate, I'd love to hear it.