[fix][fabric][apple] Use correct header dir name in RCTFabricComponentsPlugins.h for BUCK compat

[shwanton]

Context

• The import should be prefixed w/ "React" in order for this to be built by Meta build system (BUCK).
• Examples:
  • https://github.com/facebook/react-native/blob/03a51da727022d96f7f9bbc0840b1409121d0429/packages/react-native/React/Fabric/Mounting/ComponentViews/RCTFabricComponentsPlugins.h#L13
  • https://github.com/software-mansion/react-native-svg/blob/9f6f6fd40c2cc4de2d117c24cf8a5c5e4bcfc4f9/apple/Shapes/RNSVGRect.mm#L14
  • https://github.com/react-native-progress-view/progress-view/blob/f8d4555053120eea1e2b78df1e77cd1addd937bb/ios/Fabric/RNCProgressViewComponentView.mm#L11
  • https://github.com/software-mansion/react-native-screens/blob/6b694e39b61865dd24ae7e90dcdbb2d69bda0f49/ios/RNSScreen.mm#L9

Still builds!

[react-native-community-bot]

:tada: This PR is included in version 13.9.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: