DYN-8055: Fix build due to un-even PR merge

[zeusongit]

Purpose

Fix build due to un-even PR merge

Declarations

Check these if you believe they are true

• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB
• This PR introduces new feature code involve network connecting and is tested with no-network mode.

Release Notes

Fix build due to un-even PR merge

Reviewers

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[Copilot]

Pull Request Overview

This PR fixes a build issue caused by an un-even PR merge by removing redundant DPI scale calculations.

• Removes legacy DPI scaling logic using PresentationSource
• Consolidates DPI scaling by relying solely on GetDpiScale()

[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-8055