Fix for building and deploying arm64e to devices

[tom-un]

Please select one of the following

• I am removing an existing difference between facebook/react-native and microsoft/react-native 👍
• I am cherry-picking a change from Facebook's react-native into microsoft/react-native 👍
• I am making a fix / change for the macOS implementation of react-native
• I am making a change required for Microsoft usage of react-native

In previous commits changes were made to add arm64e as an arch for all iOS react libs. In recent merges from facebook to the microsoft fork two new targets were added: jsi and jsiExecutor. These two newer targets also need arm64e.

Test apps, like RNTester, also need the arm64e architecture when deploying to devices with A12 processors like the iPhone XS/XR and higher.

Microsoft Reviewers: Open in CodeFlow

[pull-bot]

	Messages
📖	📋 Missing Changelog - Can you add a Changelog? To do so, add a "## Changelog" section to your PR description. A changelog entry has the following format: [CATEGORY] [TYPE] - Message. CATEGORY may be: General iOS Android JavaScript Internal (for changes that do not need to be called out in the release notes) TYPE may be: Added, for new features. Changed, for changes in existing functionality. Deprecated, for soon-to-be removed features. Removed, for now removed features. Fixed, for any bug fixes. Security, in case of vulnerabilities. MESSAGE may answer "what and why" on a feature level. Use this to briefly tell React Native users about notable changes.
📖	📋 Missing Test Plan - Can you add a Test Plan? To do so, add a "## Test Plan" section to your PR description. A Test Plan lets us know how these changes were tested.
📖	📋 Missing Summary - Can you add a Summary? To do so, add a "## Summary" section to your PR description. This is a good place to explain the motivation for making this change.

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[HeyImChris]

Can we also make sure this works with Cocoapods enabled?

[tom-un]

Yep. I suspect its going to be a change to the new Cocoapod changes for macOS for both the React libs and for RNTester.