win: fix VSCode manual update switch script #312

This commit addresses a regression from refactoring in #215.

It restores YAML escape mechanism with quoting around 'manual' in the
`powerShellValue` attribute to ensure PowerShell interprets the value
correctly.

This change is documented with a comment to avoid future omissions.

This reverts commit c27172c.

src/application/collections/windows.yaml

@@ -4643,7 +4643,7 @@ actions:
                             function: SetVsCodeSetting
                             parameters:
                                 setting: update.mode
-                                powerShellValue: manual
+                                powerShellValue: "'manual'" # The double quotes around 'manual' is important for PowerShell to correctly interpret the value.
                     -
                         name: Disable fetching release notes from Microsoft servers after an update
                         call: