Deduplicate `updateStyle` overloads
Deduplicate `updateStyle` overloads

Summary:
@public

The extra overload of `updateStyle` introduced in D15078961 can also handle `BitfieldRef`.
That means that we can remove the more specific implementation previously introduced for `BitfieldRef`

Reviewed By: SidharthGuglani

Differential Revision: D15081069

fbshipit-source-id: 98f1f3478627974c5273c85d268ca07350f303d7

pandiaraj44/react-native,facebook/react-native,pandiaraj44/react-native,hammerandchisel/react-native,hoangpham95/react-native,javache/react-native,pandiaraj44/react-native,javache/react-native,exponentjs/react-native,facebook/react-native,hoangpham95/react-native,arthuralee/react-native,exponentjs/react-native,hoangpham95/react-native,myntra/react-native,javache/react-native,hoangpham95/react-native,exponentjs/react-native,janicduplessis/react-native,javache/react-native,myntra/react-native,exponentjs/react-native,janicduplessis/react-native,myntra/react-native,facebook/react-native,javache/react-native,exponent/react-native,facebook/react-native,myntra/react-native,javache/react-native,janicduplessis/react-native,hammerandchisel/react-native,myntra/react-native,facebook/react-native,hammerandchisel/react-native,janicduplessis/react-native,pandiaraj44/react-native,arthuralee/react-native,facebook/react-native,janicduplessis/react-native,exponentjs/react-native,arthuralee/react-native,exponent/react-native,myntra/react-native,hammerandchisel/react-native,hoangpham95/react-native,pandiaraj44/react-native,hammerandchisel/react-native,hammerandchisel/react-native,javache/react-native,pandiaraj44/react-native,hammerandchisel/react-native,myntra/react-native,exponent/react-native,myntra/react-native,hoangpham95/react-native,hoangpham95/react-native,arthuralee/react-native,facebook/react-native,exponentjs/react-native,exponent/react-native,arthuralee/react-native,hoangpham95/react-native,pandiaraj44/react-native,exponent/react-native,hammerandchisel/react-native,exponentjs/react-native,pandiaraj44/react-native,facebook/react-native,exponent/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,exponent/react-native,myntra/react-native,exponent/react-native,exponentjs/react-native,javache/react-native