placing the check directly in the return statement

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

@@ -443,7 +443,7 @@ class CodeActionAdapter {
 						this._logService.warn(`${this._extension.identifier.value} - Code actions of kind '${codeActionContext.only.value} 'requested but returned code action is of kind '${candidate.kind.value}'. Code action will be dropped. Please check 'CodeActionContext.only' to only return requested code actions.`);
 					}
 				}
-				const isCopilot = 'isCopilot' in candidate && typeof candidate.isCopilot === 'boolean' ? candidate.isCopilot : false;
+
 				// new school: convert code action
 				actions.push({
 					cacheId: [cacheId, i],
@@ -454,7 +454,7 @@ class CodeActionAdapter {
 					kind: candidate.kind && candidate.kind.value,
 					isPreferred: candidate.isPreferred,
 					disabled: candidate.disabled?.reason,
-					isCopilot
+					isCopilot: 'isCopilot' in candidate && typeof candidate.isCopilot === 'boolean' ? candidate.isCopilot : false
 				});
 			}
 		}