[RNMobile] Disable automatically managed signing for RN editor Xcode project.

[twstokes]

Description

Due to changes in how certificates and provisioning profiles are now distributed, Xcode should not try to automatically manage signing for the React Native Editor project.

Related Gutenberg Mobile PR:

• [iOS] Disable automatically managed signing for RN editor Xcode project. wordpress-mobile/gutenberg-mobile#4200

How these changes were applied automatically by Xcode

1. For the GutenbergDemo target, "Automatically manage signing" was unchecked
2. The Provisioning Profile "Gutenberg Development" was selected

How has this been tested?

Build the app using the new Gutenberg Development profile:

1. Load the project in Xcode: xed packages/react-native-editor/ios
2. Build and run in Simulator or a physical device

Types of changes

Non user-facing tooling update.

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• I've tested my changes with keyboard and screen readers.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

[jd-alexander]

Thanks for these changes @twstokes 💯

I verified that in GutenbergDemo Signing & Capabilities:

1. "Automatically manage signing" was unchecked
2. The Provisioning Profile of "Gutenberg Development" was selected.

The diff correlates with the settings above and the GutenbergDemo app ran as expected on an iOS Simulator. LGTM 🚢