Layout misc fixes

Fixes a couple of issues:
1. When checking if a component should default to fixed or hug, parametric Shapes were improperly bucketed as fixed because a Shape is a Node, so the if statement needed to be adjusted.
2. When synching style, need to reset flexGrow/flexShrink in particular because if a layout was created with type fill initially, the flexShrink value would never get reset, so the sizing behavior was wrong.

Diffs=
bc4d42b7b Layout misc fixes (#8292)

Co-authored-by: Philip Chung <philterdesign@gmail.com>

.rive_head

@@ -1 +1 @@
-31bf5a44f282bd4c233a6fb9e44e73b0378bf449
+bc4d42b7b3d24c4ba12d3f2af32904c910d37d70

src/layout_component.cpp

@@ -356,6 +356,9 @@ void LayoutComponent::syncStyle()
     ygStyle.dimensions()[YGDimensionWidth] = YGValue{realWidth, realWidthUnits};
     ygStyle.dimensions()[YGDimensionHeight] = YGValue{realHeight, realHeightUnits};
 
+    ygStyle.flexGrow() = YGFloatOptional();
+    ygStyle.flexShrink() = YGFloatOptional();
+    ygStyle.alignSelf() = YGAlignAuto;
     switch (realWidthScaleType)
     {
         case LayoutScaleType::fixed: