Add registry search for upgrade policy keys

[joeloff]

Description

Add registry search operations to Windows installer bundles. The search operation will check for a global and version specific registry key. The version specific key takes precedence when present.

This is related to a customer request and part of a larger change. This PR only includes infrastructure changes to support changes in the Windows installer bundles.

Risk

Low, this change only adds detection for the key, nothing will currently act on its value.

Testing

Verified against a private build of Windows Desktop. Log excerpt below. The test machine contained both a global and version specific key.

HKEY_LOCAL_MACHINE\software\microsoft\.NET
    RemovePreviousVersion    REG_SZ    nextSession

HKEY_LOCAL_MACHINE\software\microsoft\.NET\6.0
    RemovePreviousVersion    REG_SZ    never

[0E70:11A0][2024-07-24T10:28:11]i000: Setting string variable 'WixBundleName' to value 'Microsoft Windows Desktop Runtime - 6.0.33 (x64)'
[0E70:0EBC][2024-07-24T10:28:11]i000: Setting version variable 'WixBundleFileVersion' to value '6.0.33.33924'
[0E70:11A0][2024-07-24T10:28:11]i000: Setting string variable 'RemoveUpgradeRelatedBundle' to value 'nextSession'
[0E70:11A0][2024-07-24T10:28:11]i000: Setting numeric variable 'RemoveSpecificPreviousVersionRegistryKeyExists' to value 1
[0E70:11A0][2024-07-24T10:28:11]i052: Condition 'RemoveSpecificPreviousVersionRegistryKeyExists=1' evaluates to true.
[0E70:11A0][2024-07-24T10:28:11]i000: Setting string variable 'RemoveUpgradeRelatedBundle' to value 'never'

The base branch was changed.

[joeloff]

/backport to release/8.0

[github-actions]

Started backporting to release/8.0: https://github.com/dotnet/arcade/actions/runs/10723898378

[joeloff]

/backport to release/9.0

[github-actions]

Started backporting to release/9.0: https://github.com/dotnet/arcade/actions/runs/10723902401

[joeloff]

/backport to main

[github-actions]

Started backporting to main: https://github.com/dotnet/arcade/actions/runs/10723921629

[joeloff]

Closing since we will not be taking this for 6.0