Keep rotateZ on elements with a layout animation

The projection pipeline handled rotate, rotateX and rotateY but not
rotateZ, so a layout or shared layout animation silently dropped it from
the generated transform and never mixed it between lead and follow.

CHANGELOG.md

@@ -10,6 +10,10 @@ Undocumented APIs should be considered internal and may change without warning.
 
 -   `springValue`/`useSpring`: Improved performance when retargeting spring.
 
+### Fixed
+
+-   `rotateZ` is no longer dropped from elements with a layout or shared layout animation.
+
 ## [13.2.0] 2026-09-03
 
 ### Added