修复uni-exit插件的语法警告

uni_modules/uni-exit/utssdk/app-android/index.uts

-import { ExitOptions, ExitSuccess, ExitCompleteCallback, Exit } from "../interface.uts"
+import { ExitOptions, ExitSuccess, Exit } from "../interface.uts"
 
 
 /**

uni_modules/uni-exit/utssdk/app-ios/index.uts

-import { ExitOptions, ExitFailCallback, ExitCompleteCallback, Exit} from "../interface.uts"
+import { ExitOptions, Exit} from "../interface.uts"
 import { ExitFailImpl } from "../unierror.uts"
 
 

uni_modules/uni-exit/utssdk/unierror.uts

@@ -25,6 +25,7 @@ export const UniErrors:Map<number, string> = new Map([
  * ExitFail的实现
  */
 export class ExitFailImpl extends UniError implements IExitError {
+  override errCode: ExitErrorCode
   constructor (
     errCode: ExitErrorCode
   ) {