Exclude windows from React-Fabric

Summary:
## Changelog:
[Internal] - Exclude the windows folder from View in React-Fabric podspec

## Facebook:
The `platforms/windows` folder is internal only, not synched with OSS.

However, the C++ linking was picking up some files from that folder when running RNTester on iOS using the OSS pipeline.

bypass-github-export-checks

Reviewed By: dmytrorykun

Differential Revision: D58182437

fbshipit-source-id: 5397fadbe96d5c2c7980fbf5e74ffab7b237b912

packages/react-native/ReactCommon/React-Fabric.podspec

@@ -143,7 +143,7 @@ Pod::Spec.new do |s|
       sss.dependency             "Yoga"
       sss.compiler_flags       = folly_compiler_flags
       sss.source_files         = "react/renderer/components/view/**/*.{m,mm,cpp,h}"
-      sss.exclude_files        = "react/renderer/components/view/tests", "react/renderer/components/view/platform/android"
+      sss.exclude_files        = "react/renderer/components/view/tests", "react/renderer/components/view/platform/android", "react/renderer/components/view/platform/windows"
       sss.header_dir           = "react/renderer/components/view"
       sss.pod_target_xcconfig  = { "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/Headers/Private/Yoga\"" }
     end