feat: enable win11 context menu for stable

[deepak1556]

Fixes #204696
Fixes #259505

System setup install/uninstall commands are from https://learn.microsoft.com/en-us/windows/apps/desktop/modernize/grant-identity-to-nonpackaged-apps#per-machine-powershell

[Copilot]

Pull request overview

This PR enables the Windows 11 modern context menu integration for VS Code stable releases, extending the feature that was previously limited to insiders builds only. The change removes quality-specific checks so that all Windows 11+ installations use the new AppxPackage-based context menu system.

Changes:

• Removed QualityIsInsiders condition checks from registry entries and installer tasks to enable Win11 context menus for stable builds
• Updated task availability check for addcontextmenufolders to allow the option on Windows 11+ for all builds
• Modified cleanup logic to remove old context menu registry keys on Windows 11+ for all builds

Comments suppressed due to low confidence (1)

build/win32/code.iss:85

• The task condition for addcontextmenufolders was not updated consistently with the registry entry changes. Line 85 still contains Check: not (IsWindows11OrLater and QualityIsInsiders) which should be updated to Check: not IsWindows11OrLater to match the new behavior where Windows 11+ uses the AppxPackage for context menus regardless of quality. This inconsistency means the folder context menu task option would still be hidden on Windows 11+ for insiders, even though the registry entries now apply to all builds.

Name: "addcontextmenufolders"; Description: "{cm:AddContextMenuFolders,{#NameShort}}"; GroupDescription: "{cm:Other}"; Flags: unchecked; Check: not (IsWindows11OrLater and QualityIsInsiders)

[vs-code-engineering]

📬 CODENOTIFY

The following users are being notified based on files changed in this PR:

@lszomoru

Matched files:

• build/azure-pipelines/win32/codesign.ts