Strange macro behavior with server during heaps shader generation

[yuxiaomao]

There is a project, when building Hide plugin (javascript) for the 2nd time and above, generate errors which does not present if we do not use server.
Two errors are observed:

• Forced inline constructor could not be inlined - when add a line in a heaps/h3d.shader
• error: haxe.iterators.ArrayIterator<hxd.fmt.hmd.AnimationEvent>.hasNext is not accessible at runtime and many others similar errors (~130 errors in total) - when remove a line in shader or when modify heaps/hxsl/Macro.hx

Bisect indicate:

• be88d42 (known good commit)
• fe395ef (very likely the first bad commit, which requires cherrypick 7f6d274 to compile)
• 7f6d274 (known bad commit)