Update samples to use GeometryEngine static extension methods

[williambohrmann3]

Description

Now calling GeometryEngine static extension methods.

Type of change

• Bug fix
• New sample implementation
• Sample viewer enhancement
• Other enhancement

Platforms tested on:

• WPF .NET 6
• WPF Framework
• WinUI
• MAUI

Checklist

• Self-review of changes
• Runs and compiles on all active platforms
• Branch is up to date with the latest main/v.next
• All merge conflicts have been resolved
• There are no warnings related to changes
• No unrelated changes have been made to any other code or project files
• sample_sync.py runs without making changes
• Codemaid and XAML styler extensions have been run on every changed file
• Code is commented with correct formatting
• All variable and method names are good and make sense
• There is no leftover commented code
• Screenshots are correct size and display in description tab (800 x 600 on Windows, 600 height mobile screenshots for MAUI)