use same signing config for debug build (#19760)
use same signing config for debug build (#19760)

Summary:
use same signing config for debug build
pass all current ci.
none
 [GENERAL] [INTERNAL] [RNTester] - use same signing config for debug build .
Closes https://github.com/facebook/react-native/pull/19760

Differential Revision: D8623409

Pulled By: hramos

fbshipit-source-id: 420842db3f954101ee8f771aaf0b021bea385741

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