Add _validate_component_children bypass for experimental memo wrappers

Memo wrappers are transparent in the authored component tree — they
should not trigger _valid_parents checks against themselves. Override
_validate_component_children on ExperimentalMemoComponent to skip the
check, preventing false validation failures when a restricted child
(e.g. _valid_parents = ["ValidParent"]) is wrapped in a memo before
being placed inside its valid parent.

Author: FarhanAliRaza

reflex/experimental/memo.py

@@ -76,6 +76,19 @@ class ExperimentalMemoComponent(Component):
 
     library = f"$/{constants.Dirs.COMPONENTS_PATH}"
 
+    def _validate_component_children(self, children: list[Component]) -> None:
+        """Skip direct parent/child validation for memo wrapper instances.
+
+        Experimental memos wrap an underlying compiled component definition.
+        The runtime wrapper should not interpose on `_valid_parents` checks for
+        the authored subtree because the wrapper itself is not the semantic
+        parent in the user-authored component tree.
+
+        Args:
+            children: The children of the component (ignored).
+        """
+        del children
+
     def _post_init(self, **kwargs):
         """Initialize the experimental memo component.
 

tests/units/experimental/test_memo.py

@@ -415,6 +415,29 @@ def wrapper() -> rx.Component:
     assert definition.component.style == Style()
 
 
+def test_component_returning_memo_is_transparent_for_child_validation():
+    """Experimental memo wrappers should not break `_valid_parents` checks."""
+
+    class ValidParent(Component):
+        tag = "ValidParent"
+        library = "valid-parent"
+
+    class RestrictedChild(Component):
+        tag = "RestrictedChild"
+        library = "restricted-child"
+        _valid_parents = ["ValidParent"]
+
+    @rx._x.memo
+    def transparent(children: rx.Var[rx.Component]) -> rx.Component:
+        return children  # type: ignore[return-value]
+
+    wrapped_child = transparent(RestrictedChild.create())
+    parent = ValidParent.create(wrapped_child)
+
+    assert isinstance(wrapped_child, ExperimentalMemoComponent)
+    assert parent.children == [wrapped_child]
+
+
 def test_compile_memo_components_includes_experimental_custom_code():
     """Experimental component memos should include custom code in compiled output."""