Remove use of TextLayoutManager::Shared and SharedTextLayoutManager

Summary:
changelog: [internal]

For some reason, using `TextLayoutManager::Shared` in `TextInputShadowNode` trips up clang tidy linter. We have a plan to move away from `*::Shared` anyway, so let's remove it from `TextInputShadowNode` now.

Why do we want to move away from `*::Shared`?
Using `TextLayoutManager::Shared` is confusing for people unfamiliar with Fabric's codebase. It expresses a concept of immutability but uses term `shared`. Term shared is already used in C++  `std::shared_ptr`.

Reviewed By: fkgozali

Differential Revision: D33186422

fbshipit-source-id: 10ee588735997f5fedc372a1d1e3d9cd9684178a

ReactCommon/react/renderer/components/textinput/iostextinput/TextInputState.cpp

@@ -8,5 +8,27 @@
 #include "TextInputState.h"
 
 namespace facebook {
-namespace react {} // namespace react
+namespace react {
+
+#ifdef ANDROID
+TextInputState::TextInputState(
+    TextInputState const &previousState,
+    folly::dynamic data){};
+
+/*
+ * Empty implementation for Android because it doesn't use this class.
+ */
+folly::dynamic TextInputState::getDynamic() const {
+  return {};
+};
+
+/*
+ * Empty implementation for Android because it doesn't use this class.
+ */
+MapBuffer TextInputState::getMapBuffer() const {
+  return MapBufferBuilder::EMPTY();
+};
+#endif
+
+} // namespace react
 } // namespace facebook