Deprecate source-login-scripts.sh (#18330)

# Why

the `source-login-scripts.sh` introduced a lot of pain where the community reported much build errors from it. it doesn't support shells other tha

Deprecate source-login-scripts.sh (#18330)

# Why

the `source-login-scripts.sh` introduced a lot of pain where the community reported much build errors from it. it doesn't support shells other than zsh and bash. this pr find a new way to deal with xcode building issues that it cannot find the correct nodejs path.

close ENG-4864
close ENG-5242

# How

react-native introduces `.xcode.env` and `.xcode.env.local` for developers to override the `$NODE_BINARY`: https://github.com/facebook/react-native/pull/33546

to make sure building success from expo-constants, expo-updates, and also the app target when generating bundles. i would like to reuse the `.xcode.env` and `.xcode.env.local` from react-native. this pr further generates `.xcode.env.local` automatically for the app during `pod install`. we can ensure that `pod install` is executed from shell and nodejs is available. so we will generate `export NODE_BINARY="$(command -v node)"` in the `.xcode.env.local`. for xcode, the path will be `$PODS_ROOT/../.xcode.env.local`, every xcode subprojects can source the file to get correct `$NODE_BINARY`.

# Test Plan

- building bare-expo from xcode (opening xcode by macos finder)
- building bare-expo by `yarn ios`
- updates e2e ci passed
- building expo-go (prerequisite: #18344)

Co-authored-by: James Ide <[email protected]>

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