[Fastlane.swift] fix crash in `LaneFileProtocol.swift` when executing fastlane Swift without using SPM (#17276)
[Fastlane.swift] fix crash in `LaneFileProtocol.swift` when executing fastlane Swift without using SPM (#17276)

* Fix force unwrap crash when not in SPM environment.

* Remove redundant macro condition.

* Review documentation wording and style.

* Rename function to use verb instead of noun 🤓.
fastlane/fastlane,taquitos/fastlane,icecrystal23/fastlane,nafu/fastlane,nafu/fastlane,bolom/fastlane,cpk1/fastlane,cpk1/fastlane,nafu/fastlane,bolom/fastlane,KrauseFx/fastlane,nafu/fastlane,KrauseFx/fastlane,icecrystal23/fastlane,fastlane/fastlane,icecrystal23/fastlane,fastlane/fastlane,icecrystal23/fastlane,taquitos/fastlane,cpk1/fastlane,Econa77/fastlane,fastlane/fastlane,kazuhidet/fastlane,Econa77/fastlane,KrauseFx/fastlane,cpk1/fastlane,lacostej/fastlane,cpk1/fastlane,kazuhidet/fastlane,KrauseFx/fastlane,lacostej/fastlane,taquitos/fastlane,bolom/fastlane,bolom/fastlane,kazuhidet/fastlane,nafu/fastlane,lacostej/fastlane,lacostej/fastlane,Econa77/fastlane,taquitos/fastlane,fastlane/fastlane,nafu/fastlane,bassrock/fastlane,kazuhidet/fastlane,Econa77/fastlane,Econa77/fastlane,fastlane/fastlane,taquitos/fastlane,Econa77/fastlane,KrauseFx/fastlane,Econa77/fastlane,cpk1/fastlane,KrauseFx/fastlane,bassrock/fastlane,bolom/fastlane,bassrock/fastlane,bassrock/fastlane,kazuhidet/fastlane,nafu/fastlane,kazuhidet/fastlane,icecrystal23/fastlane,taquitos/fastlane,kohtenko/fastlane,kazuhidet/fastlane,bolom/fastlane,bolom/fastlane,cpk1/fastlane,bassrock/fastlane,lacostej/fastlane,KrauseFx/fastlane,taquitos/fastlane,bassrock/fastlane,icecrystal23/fastlane,lacostej/fastlane,kohtenko/fastlane