validating core objects property keys on load

this should fix fuzz crashes caught from bad animation keys

Diffs=
8a538c243 validating core objects property keys on load (#7298)

Co-authored-by: Luigi Rosso <luigi-rosso@users.noreply.github.com>

.rive_head

@@ -1 +1 @@
-cd6210f42d644de3cc1c83fa65b3d4e1f790cece
+8a538c243fcc5b72159388a7e63669f1e6998dda

dev/core_generator/lib/src/definition.dart

@@ -557,6 +557,22 @@ class Definition {
     ctxCode.writeln('default:return false;');
     ctxCode.writeln('}}');
 
+    // static bool objectSupportsProperty(Core* object, uint32_t propertyKey) { return true; }
+    ctxCode.writeln('''
+      static bool objectSupportsProperty(Core* object, uint32_t propertyKey) {
+        switch(propertyKey) {''');
+    for (final fieldType in usedFieldTypes.keys) {
+      var properties = getSetFieldTypes[fieldType];
+      if (properties != null) {
+        for (final property in properties) {
+          ctxCode.writeln('case ${property.definition.name}Base'
+              '::${property.name}PropertyKey:');
+          ctxCode
+              .writeln('return object->is<${property.definition.name}Base>();');
+        }
+      }
+    }
+    ctxCode.writeln('}return false;}');
     ctxCode.writeln('};}');
 
     var output = generatedHppPath;