add new decoration provider to the start of the list,...

add new decoration provider to the start of the list, https://github.com/microsoft/vscode/issues/133210

src/vs/workbench/services/decorations/browser/decorationsService.ts

@@ -398,7 +398,7 @@ export class DecorationsService implements IDecorationsService {
 			this._onDidChangeDecorationsDelayed,
 			this._onDidChangeDecorations
 		);
-		const remove = this._data.push(wrapper);
+		const remove = this._data.unshift(wrapper);
 
 		this._onDidChangeDecorations.fire({
 			// everything might have changed