Patch Changes

• #11106 f6a26478547c7057aeda82516666dc3473dc39bd Thanks @shadcn! - Fix MessageScroller autoScroll around anchored turns: the anchor hold now hands off to follow-output once the streamed reply fills the viewport, content growth outrunning the frame-coalesced resize handler no longer releases follow-output, and the scroll button no longer flickers while follow-output closes the gap a streamed chunk just opened.

• #11100 dd6ce77cf1606eee2839368a97cc35417f763232 Thanks @shadcn! - Fix MessageScroller abandoning a newly appended scrollAnchor placement when autoScroll is enabled, so the anchored turn holds at the reading line while the reply streams.

• #11085 628e427231ca4bb7f586a69f99fe7809749a53e2 Thanks @devnomic! - Fix MessageScroller firing "ResizeObserver loop completed with undelivered notifications" during streamed content growth by coalescing ResizeObserver callbacks into requestAnimationFrame.