UnrealHeaderTool is always executed in a Code Project from an InstalledBuild
Discovered during the verification of
UE-71031, as stated when verifying that issue, this issue only occurs in Binary, not in Perforce or Github
Subsequent runs of building the Development Editor for the blank code project produce the same behavior
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-73197 in the post.