Fix incorrect precision restoration when computing accurate world translations

When FTransformManager computes accurate world transforms, it adds downcasted leftover to translation part to restore precision.
However, both transltation and leftover are given as float3 - simply adding them resut float3, so addling leftover become meaningless.
one or both should be upcasted first.

RELEASE_NOTES.md

@@ -7,6 +7,7 @@ A new header is inserted each time a *tag* is created.
 
 - WebGL: upgraded the JS bindings to work with emsdk 3.1.15
 - WebGL: added missing IBL builder to TypeScript annotations
+- engine : Fix incorrect precision restoration when computing accurate world translations
 
 ## v1.25.4
 

filament/src/components/TransformManager.cpp

@@ -412,10 +412,10 @@ void FTransformManager::computeWorldTransform(
 
         const mat4 ptd{
                 pt[0], pt[1], pt[2],
-                double4{ pt[3].xyz + ptTranslationLo, pt[3].w }};
+                double4{ double3(pt[3].xyz) + double3(ptTranslationLo), pt[3].w }};
 
         const double4 worldTranslation =
-                ptd * double4{ local[3].xyz + localTranslationLo, local[3].w };
+                ptd * double4{ double3(local[3].xyz) + double3(localTranslationLo), local[3].w };
 
         inoutWorldTranslationLo = worldTranslation.xyz - float3{ worldTranslation.xyz };
         outWorld[3] = worldTranslation;