Autodesk: Fix MSVC build with pch

[erikaharrison-adsk]

Description of Change(s)

Fix Windows build failure when PCH is ON when using ninja.

Fixes Issue(s)

• N/A

• [X] I have verified that all unit tests pass with the proposed changes

• [X] I have submitted a signed Contributor License Agreement

[jesschimein]

Filed as internal issue #USD-9754

[jesschimein]

/AzurePipelines run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[jesschimein]

/AzurePipelines run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[jesschimein]

/AzurePipelines run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[DDoS]

This fixes #3408

[pixar-oss]

Looks like this is a duplicate of #3204 which has been merged in to the dev branch. I'm closing this for now, but feel free to reopen if you continue to have issues!