Fix duplicate Networking module bug

Summary:
While investigating a bridgeless networking issue, I noticed something very peculiar. **Two** networking turbo modules are built and used in bridgeless mode. Upon debugging, I realized that each of them have a different `TurboModuleHolder`. The reason is the following:
1. In JS, the module's name is [Networking](https://fburl.com/diffusion/f2xu4wie)
2. In ObjC, we call the module "RCTNetworking" (examples in this diff)
3. Both scenarios end up creating the correct Turbo Module: [RCTNetworking](https://www.internalfb.com/intern/diffusion/FBS/browsefile/master/xplat/js/react-native-github/Libraries/Network/RCTNetworking.mm?link_ref=search), but the `TurboModuleHolder` doesn't know that "RCTNetworking" and "Networking" are the same. Any other modules accessed this way will have the same issue.

An alternative solution would be to tell `TurboModuleHolder` to strip the `RCT` suffix, which would solve the problem globally. RSNara thoughts?

Changelog: [Internal]

Reviewed By: RSNara

Differential Revision: D25477044

fbshipit-source-id: 02219de578ef4d19e579110e4242883a30cefcd6

Author: Peter Argany

Libraries/Blob/RCTBlobManager.mm

@@ -140,7 +140,7 @@ - (void)remove:(NSString *)blobId
 
 RCT_EXPORT_METHOD(addNetworkingHandler)
 {
-  RCTNetworking *const networking = _bridge ? _bridge.networking : [_turboModuleRegistry moduleForName:"RCTNetworking"];
+  RCTNetworking *const networking = _bridge ? _bridge.networking : [_turboModuleRegistry moduleForName:"Networking"];
 
   // TODO(T63516227): Why can methodQueue be nil here? 
   // We don't want to do anything when methodQueue is nil.

Libraries/Image/RCTImageLoader.mm

@@ -646,7 +646,7 @@ - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
 {
   // Check if networking module is available
   if (RCT_DEBUG && ![_bridge respondsToSelector:@selector(networking)]
-      && ![_turboModuleRegistry moduleForName:"RCTNetworking"]) {
+      && ![_turboModuleRegistry moduleForName:"Networking"]) {
     RCTLogError(@"No suitable image URL loader found for %@. You may need to "
                 " import the RCTNetwork library in order to load images.",
                 request.URL.absoluteString);
@@ -655,7 +655,7 @@ - (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
 
   RCTNetworking *networking = [_bridge networking];
   if (!networking) {
-    networking = [_turboModuleRegistry moduleForName:"RCTNetworking"];
+    networking = [_turboModuleRegistry moduleForName:"Networking"];
   }
 
   // Check if networking module can load image