Fix memory leak in TextInput (#55719)

Summary:
When implementing a local FPS monitor I noticed that `TextInput` leaked memory. tomekzaw helped triage and confirm whether the leak was occurring in reanimated or react-native upstream.

We collaborated on a fix for this and noticed that this was fixed 6 years ago in text [here](490e33d)

We've ported the same fix to `BaseTextInputShadowNode.h`

## Changelog:

[General] [Fixed] - Fix memory leak in TextInput

Pull Request resolved: #55719

Test Plan:
https://snack.expo.dev/mobinni/memory-leak-reproducer

- Run this with XCode instruments and see memory grow over time

<img width="1094" height="930" alt="image" src="https://github.com/user-attachments/assets/bc9abb5a-42ff-430c-8efb-a418ba65ddc2" />

Reviewed By: NickGerleman, mdvacca

Differential Revision: D94267721

Pulled By: javache

fbshipit-source-id: 69a5b5254c2d498796c209cb133a5929d11c36ef

Author: mobinni

packages/react-native/ReactCommon/react/renderer/components/textinput/BaseTextInputShadowNode.h

@@ -25,6 +25,16 @@
 
 namespace facebook::react {
 
+inline ShadowView shadowViewFromShadowNode(const ShadowNode &shadowNode)
+{
+  auto shadowView = ShadowView{shadowNode};
+  // Clearing `props` and `state` (which we don't use) allows avoiding retain
+  // cycles.
+  shadowView.props = nullptr;
+  shadowView.state = nullptr;
+  return shadowView;
+}
+
 /*
  * Base `ShadowNode` for <TextInput> component.
  */
@@ -171,7 +181,9 @@ class BaseTextInputShadowNode
     AttributedString attributedString;
     attributedString.appendFragment(
         AttributedString::Fragment{
-            .string = props.text, .textAttributes = textAttributes, .parentShadowView = ShadowView(*this)});
+            .string = props.text,
+            .textAttributes = textAttributes,
+            .parentShadowView = shadowViewFromShadowNode(*this)});
 
     auto attachments = BaseTextShadowNode::Attachments{};
     BaseTextShadowNode::buildAttributedString(textAttributes, *this, attributedString, attachments);