1.9.2607.13 libs only provide ARM64EC exports (with no ARM64 exports)

[TheLastRar]

Description
Release 1.9.2607.13 provides the following exports

  Version      : 0
  Machine      : A641 (ARM64EC)
  TimeDateStamp: EC89E1A7
  SizeOfData   : 00000034
  DLL name     : dxcompiler.dll
  Symbol name  : #DxcCreateInstance
  Type         : code
  Name type    : exportas
  Hint         : 0
  Name         : DxcCreateInstance

  Version      : 0
  Machine      : A641 (ARM64EC)
  TimeDateStamp: F8E88D6F
  SizeOfData   : 00000036
  DLL name     : dxcompiler.dll
  Symbol name  : #DxcCreateInstance2
  Type         : code
  Name type    : exportas
  Hint         : 0
  Name         : DxcCreateInstance2

This seems to cause ARM64 (non EC) builds to fail to find DxcCreateInstance when linking, as Arm64EC libs cannot be used in ARM64 (non EC) binaries

The prior nuget release (1.9.2602.24) provided the following exports

  Version      : 0
  Machine      : AA64 (ARM64)
  TimeDateStamp: FAA5DBBD
  SizeOfData   : 00000021
  DLL name     : dxcompiler.dll
  Symbol name  : DxcCreateInstance
  Type         : code
  Name type    : name
  Hint         : 0
  Name         : DxcCreateInstance

  Version      : 0
  Machine      : AA64 (ARM64)
  TimeDateStamp: E8CAF9A7
  SizeOfData   : 00000022
  DLL name     : dxcompiler.dll
  Symbol name  : DxcCreateInstance2
  Type         : code
  Name type    : name
  Hint         : 1
  Name         : DxcCreateInstance2

Steps to Reproduce
dumpbin dxcompiler.lib /HEADERS

Actual Behavior
The lib should export AA64 symbols

Environment

• DXC version 1.9.2607.13
• Host Operating System Windows 11

[TheLastRar]

As a point of comparison, the version bundled in Windows SDK 10.0.26100 has the following exports, which has both ARM64EC and ARM64 exports, which I assume is the intention

  Version      : 0
  Machine      : A641 (ARM64EC)
  TimeDateStamp: EC89E1A7
  SizeOfData   : 00000034
  DLL name     : dxcompiler.dll
  Symbol name  : #DxcCreateInstance
  Type         : code
  Name type    : exportas
  Hint         : 0
  Name         : DxcCreateInstance

  Version      : 0
  Machine      : A641 (ARM64EC)
  TimeDateStamp: F09B9BD2
  SizeOfData   : 00000036
  DLL name     : dxcompiler.dll
  Symbol name  : #DxcCreateInstance2
  Type         : code
  Name type    : exportas
  Hint         : 1
  Name         : DxcCreateInstance2

  Version      : 0
  Machine      : AA64 (ARM64)
  TimeDateStamp: FAA5DBBD
  SizeOfData   : 00000021
  DLL name     : dxcompiler.dll
  Symbol name  : DxcCreateInstance
  Type         : code
  Name type    : name
  Hint         : 0
  Name         : DxcCreateInstance

  Version      : 0
  Machine      : AA64 (ARM64)
  TimeDateStamp: E8CAF9A7
  SizeOfData   : 00000022
  DLL name     : dxcompiler.dll
  Symbol name  : DxcCreateInstance2
  Type         : code
  Name type    : name
  Hint         : 1
  Name         : DxcCreateInstance2