fix(editor): Fix crashes when resizing hierarchy panel and generating share link (#11556) 84435c6038

Fixes 2 crashes in editor:

When the editor window is resized to a small size, then the hierarchy panel is resized, it can result in a dino crash
An unrelated crash was discovered when trying to export a share link. Added a nullptr check to resolve it.

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

Author: philter

.rive_head

@@ -1 +1 @@
-4c6e0011dada1276fe049bee2684ea293fb81a81
+84435c6038720d7d291c441dcdd8a810d6c29541

src/shapes/paint/target_effect.cpp

@@ -93,6 +93,10 @@ EffectPath* TargetEffect::createEffectPath() { return new TargetEffectPath(); }
 
 void TargetEffect::invalidateEffect(PathProvider* pathProvider)
 {
+    if (!m_groupEffect)
+    {
+        return;
+    }
     if (pathProvider)
     {
         auto effectPathIt = m_effectPaths.find(pathProvider);