Drop RCT_EXPORT_METHOD from RCTWebSocketModule TurboModule

Summary:
Changelog: [Internal]

`RCTWebSocketModule` is a TurboModule: it conforms to `NativeWebSocketModuleSpec` and implements `getTurboModule:` returning the codegen'd `...SpecJSI`. For TurboModules, the JS->ObjC dispatch is driven by codegen (the generated spec supplies the `selector` and argument kinds, invoked at runtime via `NSMethodSignature` / `NSInvocation`), not by the `RCT_EXPORT_METHOD` macro's `__rct_export__` metadata.

The exported methods here are async-void with concrete parameter types (no generic `id` requiring `RCTConvert` coercion), so the macro is not functionally required. Convert them to plain ObjC method declarations; conformance to the codegen'd `NativeWebSocketModuleSpec` protocol keeps compiler-enforced signature parity.

Signature-only refactor with no change to the JS-facing API. Sync methods, methods with `id` params, and `constantsToExport` are intentionally left untouched.

Differential Revision: D113579874

Author: christophpurrer

packages/react-native/React/CoreModules/RCTWebSocketModule.mm

@@ -91,10 +91,12 @@ - (void)invalidate
   }
 }
 
-RCT_EXPORT_METHOD(
-    connect : (NSURL *)URL protocols : (NSArray *)protocols options : (JS::NativeWebSocketModule::SpecConnectOptions &)
-        options socketID : (double)socketID)
+- (void)connect:(NSString *)urlString
+      protocols:(NSArray *)protocols
+        options:(JS::NativeWebSocketModule::SpecConnectOptions &)options
+       socketID:(double)socketID
 {
+  NSURL *URL = [RCTConvert NSURL:urlString];
   if (URL == nil || URL.absoluteString.length == 0u) {
     RCTAssert(NO, @"RCTWebSocketModule: Invalid WebSocket URL passed to connect");
     [self sendEventWithName:@"websocketFailed" body:@{@"message" : @"Invalid WebSocket URL", @"id" : @(socketID)}];
@@ -167,14 +169,14 @@ - (void)invalidate
   [webSocket open];
 }
 
-RCT_EXPORT_METHOD(send : (NSString *)message forSocketID : (double)socketID)
+- (void)send:(NSString *)message forSocketID:(double)socketID
 {
   SRWebSocket *webSocket = _sockets[@(socketID)];
   [RCTInspectorWebSocketReporter reportMessageSent:webSocket.inspectorRequestId message:message];
   [webSocket sendString:message error:nil];
 }
 
-RCT_EXPORT_METHOD(sendBinary : (NSString *)base64String forSocketID : (double)socketID)
+- (void)sendBinary:(NSString *)base64String forSocketID:(double)socketID
 {
   [self sendData:[[NSData alloc] initWithBase64EncodedString:base64String options:0] forSocketID:@(socketID)];
 }
@@ -186,12 +188,12 @@ - (void)sendData:(NSData *)data forSocketID:(NSNumber *__nonnull)socketID
   [webSocket sendData:data error:nil];
 }
 
-RCT_EXPORT_METHOD(ping : (double)socketID)
+- (void)ping:(double)socketID
 {
   [_sockets[@(socketID)] sendPing:nil error:nil];
 }
 
-RCT_EXPORT_METHOD(close : (double)code reason : (NSString *)reason socketID : (double)socketID)
+- (void)close:(double)code reason:(NSString *)reason socketID:(double)socketID
 {
   [_sockets[@(socketID)] closeWithCode:code reason:reason];
   [_sockets removeObjectForKey:@(socketID)];