[DYN-8055] Placement of UI pop up for input/output ports is not accurate

[ivaylo-matov]

Purpose

This PR provides a fix for #16147 and DYN-8055.

The PortViewModel logic now takes into account the Windows scaling factor.

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

Fixed incorrect positioning of port context menus by updating the placement logic.

Reviewers

@DynamoDS/eidos
@jasonstratton

FYIs

@achintyabhat
@dnenov

[github-actions]

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

[Copilot]

Pull Request Overview

This PR fixes the inaccurate placement of UI popups for input/output ports by updating the PortViewModel logic to account for the Windows scaling factor.

• Applied dpi scaling to the vertical offset calculation for port context menus.
• Introduced dpiScale extraction from the visual of the main window to adjust positioning.

[Copilot]

Consider whether popupHeightOffset should also be scaled by dpiScale for consistency. If it's intentionally left unscaled, please add a comment to clarify the rationale.

[aparajit-pratap]

Same question as copilot :)

[ivaylo-matov]

Applying dpi scaling to this value causes the popup to appear vertically misaligned. This is because popupSize.Height is already in dpi scaled screen pixels, while HeaderHeight and PortModel.Height are in device independent units and require manual adjustment.
I've added a comment to clarify this.