fix microsoft#172440 (microsoft#172442)

Author: sandy081

src/vs/workbench/contrib/userDataProfile/browser/userDataProfilePreview.ts

@@ -20,7 +20,7 @@ export class UserDataProfilePreviewContribution extends Disposable implements IW
 	) {
 		super();
 		if (environmentService.options?.profileToPreview) {
-			userDataProfileImportExportService.importProfile(URI.revive(environmentService.options.profileToPreview), { donotPrompt: true, previewAsTempProfile: true })
+			userDataProfileImportExportService.importProfile(URI.revive(environmentService.options.profileToPreview), { preview: true })
 				.then(null, error => logService.error('Error while previewing the profile', getErrorMessage(error)));
 		}
 	}

src/vs/workbench/services/userDataProfile/browser/extensionsResource.ts

@@ -166,6 +166,7 @@ export abstract class ExtensionsResourceTreeItem implements IProfileResourceTree
 	readonly handle = ProfileResourceType.Extensions;
 	readonly label = { label: localize('extensions', "Extensions") };
 	readonly collapsibleState = TreeItemCollapsibleState.Expanded;
+	contextValue = ProfileResourceType.Extensions;
 	checkbox: ITreeItemCheckboxState | undefined;
 
 	protected readonly excludedExtensions = new Set<string>();