Closes #105667 - finalizes treeview description

src/vs/vscode.d.ts

@@ -8599,6 +8599,12 @@ declare module 'vscode' {
 		 */
 		title?: string;
 
+		/**
+		 * An optional human-readable description which is rendered less prominently in the title of the view.
+		 * Setting the title description to null, undefined, or empty string will remove the description from the view.
+		 */
+		description?: string;
+
 		/**
 		 * Reveals the given element in the tree view.
 		 * If the tree view is not visible then the tree view is shown and element is revealed.

src/vs/vscode.proposed.d.ts

@@ -2156,17 +2156,6 @@ declare module 'vscode' {
 
 	//#endregion
 
-	//#region https://github.com/microsoft/vscode/issues/105667
-
-	export interface TreeView<T> {
-		/**
-		 * An optional human-readable description that will be rendered in the title of the view.
-		 * Setting the title description to null, undefined, or empty string will remove the title description from the view.
-		 */
-		description?: string | undefined;
-	}
-	//#endregion
-
 	//#region https://github.com/microsoft/vscode/issues/103120 @alexr00
 	export class ThemeIcon2 extends ThemeIcon {
 

src/vs/workbench/api/common/extHostTreeViews.ts

@@ -102,11 +102,9 @@ export class ExtHostTreeViews implements ExtHostTreeViewsShape {
 				treeView.title = title;
 			},
 			get description() {
-				checkProposedApiEnabled(extension);
 				return treeView.description;
 			},
 			set description(description: string | undefined) {
-				checkProposedApiEnabled(extension);
 				treeView.description = description;
 			},
 			reveal: (element: T, options?: IRevealOptions): Promise<void> => {