[develop] Fix: Small fix corrections across multiple pages (2)

[qiutongMS]

Summary

• fix small documentation corrections across 10 develop pages
• correct API/type names, code snippets, and WinUI/Windows App SDK reference links
• align code samples with surrounding prose and fix loop/event handler issues

Validation

• git diff --cached --ignore-cr-at-eol --check
• validated updated Microsoft Learn links with HTTP HEAD requests (all returned 200)

[qiutongMS]

Summary: The PR fixes several small documentation issues, but I found a few remaining correctness problems in two modified pages that should be addressed before merge.

Must-fix issues:

1. hub/apps/windows-app-sdk/migrate-to-windows-app-sdk/guides/windowing.md — In the compact overlay section, the prose still says AppWindowPresenterKind.RequestPresentation. RequestPresentation is a method on AppWindowPresenter, not on AppWindowPresenterKind.
2. hub/apps/windows-app-sdk/migrate-to-windows-app-sdk/guides/windowing.md — In the full-screen mapping table, the UWP AppWindow column still says AppWindowPresenterKind.FullScreen; the UWP enum is AppWindowPresentationKind.FullScreen.
3. hub/apps/develop/ui/layout-panels.md — In the Canvas section, Canvas.Left still links to the WPF /dotnet/api/system.windows.controls.canvas.left page while the surrounding content was updated to Windows App SDK links. That leaves readers on the wrong framework reference page.

[qiutongMS]

Summary: I reviewed the diff and the full modified pages. The changes correct API names, code samples, loop/event syntax, and reference links without introducing new technical or structural issues.

Must-fix issues: None.