revert to old context key ID for code action widget (microsoft#168622)

fix microsoft#168591

Author: meganrogge

src/vs/platform/actionWidget/browser/actionWidget.ts

@@ -21,7 +21,7 @@ import { KeybindingWeight } from 'vs/platform/keybinding/common/keybindingsRegis
 
 
 const ActionWidgetContextKeys = {
-	Visible: new RawContextKey<boolean>('actionWidgetVisible', false, localize('actionWidgetVisible', "Whether the action widget list is visible"))
+	Visible: new RawContextKey<boolean>('codeActionMenuVisible', false, localize('codeActionMenuVisible', "Whether the action widget list is visible"))
 };
 
 export interface IRenderDelegate<T extends IActionItem> {