Fix error when pod has no IPHONEOS_DEPLOYMENT_TARGET (#32746)
Fix error when pod has no IPHONEOS_DEPLOYMENT_TARGET (#32746)

Summary:
Co-Authored-By: William Bell <williambell9708@outlook.com>

If one of the pods has no IPHONEOS_DEPLOYMENT_TARGET, the M1 postinstall workaround script fails. This commit updates the code to handle this special case.

## Changelog

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[iOS] [Fixed] - __apply_Xcode_12_5_M1_post_install_workaround failing when one of the Pods has no IPHONEOS_DEPLOYMENT_TARGET set

Pull Request resolved: https://github.com/facebook/react-native/pull/32746

Test Plan: https://github.com/reactwg/react-native-releases/discussions/6#discussioncomment-1791520

Reviewed By: charlesbdudley

Differential Revision: D33063717

Pulled By: lunaleaps

fbshipit-source-id: f45bc47c85e42ffb5c37a277fbedd48a729ef5fb

janicduplessis/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,javache/react-native,javache/react-native,javache/react-native,facebook/react-native,javache/react-native,facebook/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native