What does this PR accomplish?

there are a couple of things involved here:

• the crash is caused by Promise.allSettled is not a function
• currently, we have multiple sources overriding the global Promise module at app start. some of them don't support allSettled.
  • react native
  • sentry
  • web3-providers-http via paraswap
  • us manually calling require('promise.allsettled').shim() and import 'es6-promise/auto'

the fix:

• patch web3-providers-http to not override the Promise module with es6-promise. es6-promise is meant for IE9 so it is not necessary for us.
• make sure we don't call require('promise.allsettled').shim() and import 'es6-promise/auto' anymore
• update react native to 0.70.6, which adds support for Promise.allSettled out of the box.

references:
https://github.com/facebook/react-native/blob/v0.70.6/Libraries/Core/polyfillPromise.js
https://github.com/getsentry/sentry-react-native/blob/4.8.0/src/js/integrations/reactnativeerrorhandlers.ts
facebook/react-native#35080
https://github.com/web3/web3.js/blob/1.x/packages/web3-providers-http/src/index.js#L32
https://docs.sentry.io/platforms/react-native/troubleshooting/#auto-patching-default-behavior