Headless monitor leads to memory leak to ludicrous amounts, then crash if peaked or removed, sunshine might be involved

[irabrine]

Hyprland version

Hyprland 0.51.0 built from branch at commit 46174f7 (version: bump to 0.51.0).
Date: Wed Sep 10 12:41:05 2025
Tag: v0.51.0, commits: 6418
built against:
aquamarine 0.9.4
hyprlang 0.6.3
hyprutils 0.8.4
hyprcursor 0.1.13
hyprgraphics 0.1.5

no flags were set

Regression

can't call it a regression since i didn't use it before this version, and can't test since usecase requires this version for sunshine

Describe the bug

memory leak from having a headless monitor, it steadily keeps getting more and more ram over time
using the headless monitor makes the hyprland process use a tad bit more cpu which is expected, but it also makes the growing amounts of memory be faster than just using main screen
after a while (vague, i know, i noticed it's once it's over a gig of ram) when i disconnect the stream with sunshine, hyprland entirely freezes, and even locks me out of moving to tty2, only way i recover is by ssh and kill hyprland from btop, which unfortunately means i get no crash report
also when i peak my ram, when my usage gets to around 30.9g sys total, hyprland encroaches a bit too much and leads to a frozen system, no ssh saves that one
there was a similar issues with #9611 but my hyprcursor is up to date
i think it takes about 2 hours to get to 1 gig, 4g is average by the end of the day, i experimented once and didn't close it for a few days and it went up to 9g and kept going, had to reset since i need my ram back

Reproduction steps

1. create headless output
2. position headless output
3. stream headless output
4. watch hyprland process ram go brr

System info and config

[hyprlog.txt](https://github.com/user-attachments/files/22310674/hyprlog.txt) [sysinfo.txt](https://github.com/user-attachments/files/22310680/sysinfo.txt)