[action][danger] Add fail-if-no-pr flag to Danger action (#18657)
[action][danger] Add fail-if-no-pr flag to Danger action (#18657)

* [action][danger] Add fail-if-no-pr flag to Danger action

* Review comments
nafu/fastlane,bassrock/fastlane,bassrock/fastlane,fastlane/fastlane,lacostej/fastlane,bolom/fastlane,nafu/fastlane,KrauseFx/fastlane,KrauseFx/fastlane,fastlane/fastlane,fastlane/fastlane,icecrystal23/fastlane,bolom/fastlane,KrauseFx/fastlane,nafu/fastlane,bolom/fastlane,lacostej/fastlane,icecrystal23/fastlane,bassrock/fastlane,bassrock/fastlane,icecrystal23/fastlane,lacostej/fastlane,nafu/fastlane,bolom/fastlane,lacostej/fastlane,bassrock/fastlane,KrauseFx/fastlane,fastlane/fastlane,lacostej/fastlane,KrauseFx/fastlane,fastlane/fastlane,bassrock/fastlane,bolom/fastlane,bolom/fastlane,bolom/fastlane,KrauseFx/fastlane,lacostej/fastlane,nafu/fastlane,icecrystal23/fastlane,nafu/fastlane,nafu/fastlane,icecrystal23/fastlane,icecrystal23/fastlane,fastlane/fastlane,KrauseFx/fastlane