Onboard to v4 publishing

[mmitche]

V4 publishing removes the use of logging commands to upload files for publishing, instead staging outputs and then using pipeline artifacts to upload them. This is more efficient and ensures that those files go through standard scanning procedures.

[Copilot]

Pull request overview

This PR updates the repo’s build/publishing configuration to move to Arcade “publishing v4”, which stages outputs and relies on pipeline artifacts instead of logging-command uploads (improving efficiency and compliance/scanning).

Changes:

• Add eng/Publishing.props to set the repo’s publishing version to 4.
• Update azure-pipelines.yml to remove enablePublishUsingPipelines (now handled via artifact publishing configuration).
• Update azure-pipelines-official.yml to opt into publishing v4 (publishingVersion: 4) and configure post-build to use pipeline artifacts (publishingInfraVersion: 4), plus remove the symbol-server PAT variable group and related MSBuild properties.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
eng/Publishing.props	Introduces MSBuild property intended to declare publishing version 4.
azure-pipelines.yml	Removes deprecated/unused enablePublishUsingPipelines flags from job template parameters.
azure-pipelines-official.yml	Switches official pipeline configuration to publishing v4 and updates post-build template parameters accordingly.

[Youssef1313]

##[error]Artifact Logs_Build_Windows_NT_Debug already exists for build 1370234.

[mmitche]

Looks like it's been like that forever...looking into it. The other two windows legs are uploading under the same names.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[mmitche]

Fixed.