Fabric: Migrating SwitchEventEmitter to JSI-based payload

Summary: Pretty straight-forward migration to using `JSI` instead of `folly::dynamic` in SwitchEventEmitter.

Reviewed By: sahrens

Differential Revision: D13123046

fbshipit-source-id: f2e4905a96191540ceec633bae1871c93be724db

ReactCommon/fabric/components/switch/SwitchEventEmitter.cpp

@@ -10,8 +10,12 @@
 namespace facebook {
 namespace react {
 
-void SwitchEventEmitter::onChange(const bool &value) const {
-  dispatchEvent("change", folly::dynamic::object("value", value));
+void SwitchEventEmitter::onChange(bool value) const {
+  dispatchEvent("change", [value](jsi::Runtime &runtime) {
+    auto payload = jsi::Object(runtime);
+    payload.setProperty(runtime, "value", value);
+    return payload;
+  });
 }
 
 } // namespace react

ReactCommon/fabric/components/switch/SwitchEventEmitter.h

@@ -15,7 +15,7 @@ class SwitchEventEmitter : public ViewEventEmitter {
  public:
   using ViewEventEmitter::ViewEventEmitter;
 
-  void onChange(const bool &value) const;
+  void onChange(bool value) const;
 };
 
 } // namespace react