Battery dead after Sleep

I put the MacBook into Sleep and left it (unconnected to the wall) only to find it later dead with an empty battery.

The logs show that an endless series of DarkWake happening every 5-10 seconds killed the battery:

...

2024-01-23 01:17:31 +0100 DarkWake DarkWake from Deep Idle [CDN] : due to NUB.SPMI0Sw3IRQ nub-spmi0.0x02 rtc/ Using BATT (Charge:23%) 5 secs

...

2024-01-23 06:51:07 +0100 DarkWake DarkWake from Deep Idle [CDN] : due to NUB.SPMI0Sw3IRQ nub-spmi0.0x02 rtc/ Using BATT (Charge:9%) 6 secs

...

2024-01-23 09:38:00 +0100 DarkWake DarkWake from Deep Idle [CDN] : due to NUB.SPMI0Sw3IRQ nub-spmi0.0x02 rtc/ Using BATT (Charge:2%) 5 secs

...

These DarkWake events happen in thousands. In fact killing the hardware.

Any idea why Sonoma would do that to the machine?