fix(js): messagingEnabled prop (#2666)

This was always being set to "true", even if no onMessage handler was provided

Author: TheAlmightyBob

src/WebView.android.tsx

@@ -164,7 +164,7 @@ const WebViewComponent = forwardRef<{}, AndroidWebViewProps>(({
   const webView = <NativeWebView
     key="webViewKey"
     {...otherProps}
-    messagingEnabled={typeof onMessage === 'function'}
+    messagingEnabled={typeof onMessageProp === 'function'}
     messagingModuleName={messagingModuleName}
 
     onLoadingError={onLoadingError}

src/WebView.ios.tsx

@@ -174,7 +174,7 @@ const WebViewComponent = forwardRef<{}, IOSWebViewProps>(({
       useSharedProcessPool={useSharedProcessPool}
       textInteractionEnabled={textInteractionEnabled}
       decelerationRate={decelerationRate}
-      messagingEnabled={typeof onMessage === 'function'}
+      messagingEnabled={typeof onMessageProp === 'function'}
       onLoadingError={onLoadingError}
       onLoadingFinish={onLoadingFinish}
       onLoadingProgress={onLoadingProgress}

src/WebView.macos.tsx

@@ -149,7 +149,7 @@ const WebViewComponent = forwardRef<{}, MacOSWebViewProps>(({
       javaScriptEnabled={javaScriptEnabled}
       cacheEnabled={cacheEnabled}
       useSharedProcessPool={useSharedProcessPool}
-      messagingEnabled={typeof onMessage === 'function'}
+      messagingEnabled={typeof onMessageProp === 'function'}
       onLoadingError={onLoadingError}
       onLoadingFinish={onLoadingFinish}
       onLoadingProgress={onLoadingProgress}

src/WebView.windows.tsx

@@ -126,7 +126,7 @@ const WebViewComponent = forwardRef<{}, WindowsWebViewProps>(({
   const webView = <NativeWebView
     key="webViewKey"
     {...otherProps}
-    messagingEnabled={typeof onMessage === 'function'}
+    messagingEnabled={typeof onMessageProp === 'function'}
     onLoadingError={onLoadingError}
     onLoadingFinish={onLoadingFinish}
     onLoadingProgress={onLoadingProgress}