Xxxx hidden paths runtime render fixes solos

This PR adds support for soloing individual paths and nested shapes. It also aligns editor and runtime behavior.

Diffs=
ee674a819 Xxxx hidden paths runtime render fixes solos (#6252)
a0f076e31 tendon crash fix (#6258)
fdad66136 Disable d3d blend state during PLS flush (#6254)
e717ed98a add clipResult enum and render clips to copy the editor behavior (#6218)
faba3ff51 Unity (#6173)
18ae32102 Delete assets after artboards to fix race condition with FileAssetReferencers. (#6223)
252100f48 Fix validation for listeners to validate with nested inputs (#6220)
f21ebc98c compute parameters when cubic values change (#6207)

Co-authored-by: hernan <hernan@rive.app>

.rive_head

@@ -1 +1 @@
-da903372b918a5ad3f86439a944b9dddb8c5a785
+ee674a819b3e4af245cb5b33bc60bab2741079ce

lib/src/rive_core/shapes/path.dart

@@ -309,6 +309,15 @@ abstract class Path extends PathBase {
   void pathFlagsChanged(int from, int to) => markPathDirty();
 
   bool get isHidden => (pathFlags & ComponentFlags.hidden) != 0;
+
+  @override
+  bool propagateCollapse(bool collapse) {
+    bool changed = super.propagateCollapse(collapse);
+    if (changed && shape != null) {
+      shape!.pathCollapseChanged();
+    }
+    return changed;
+  }
 }
 
 enum _PathCommand { moveTo, lineTo, cubicTo, close }

lib/src/rive_core/shapes/path_composer.dart

@@ -37,7 +37,7 @@ class PathComposer extends Component {
       Mat2D inverseWorld = Mat2D();
       if (Mat2D.invert(inverseWorld, world)) {
         for (final path in shape.paths) {
-          if (path.isHidden) {
+          if (path.isHidden || path.isCollapsed) {
             continue;
           }
           localPath.addPath(path.uiPath, ui.Offset.zero,
@@ -56,7 +56,7 @@ class PathComposer extends Component {
     if (buildWorldPath) {
       worldPath.reset();
       for (final path in shape.paths) {
-        if (path.isHidden) {
+        if (path.isHidden || path.isCollapsed) {
           continue;
         }
         worldPath.addPath(path.uiPath, ui.Offset.zero,
@@ -99,4 +99,19 @@ class PathComposer extends Component {
     onDirty(dirt);
     artboard?.onComponentDirty(this);
   }
+
+  // Instead of adding dirt and rely on the recursive behavior of the addDirt method,
+  // we need to explicitly add dirt to the dependents. The reason is that a collapsed
+  // shape will not clear its dirty path flag in the current frame since it is collapsed.
+  // So in a future frame if it is uncollapsed, we mark its path flag as dirty again,
+  // but since it was already dirty, the recursive part will not kick in and the dependents
+  // won't update.
+  // This scenario is not common, but it can happen when a solo toggles between an empty
+  // group and a path for example.
+  void pathCollapseChanged() {
+    addDirt(ComponentDirt.path);
+    for (final d in dependents) {
+      d.addDirt(ComponentDirt.path, recurse: true);
+    }
+  }
 }

lib/src/rive_core/shapes/shape.dart

@@ -72,6 +72,8 @@ class Shape extends ShapeBase with ShapePaintContainer {
 
   void pathChanged(Path path) => _markComposerDirty();
 
+  void pathCollapseChanged() => pathComposer.pathCollapseChanged();
+
   void paintChanged() {
     addDirt(ComponentDirt.path);
     _markBlendModeDirty();
@@ -314,4 +316,10 @@ class Shape extends ShapeBase with ShapePaintContainer {
       path.buildPath(hitTester);
     }
   }
+
+  @override
+  bool propagateCollapse(bool collapse) {
+    propagateCollapseToChildren(collapse);
+    return super.propagateCollapse(collapse);
+  }
 }