Description: fix bug when app exit abnormally

IssueNo: https://gitee.com/openharmony/ace_engine_lite/issues/I54NXS
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: lancer <haoshuo@huawei.com>

frameworks/src/core/context/js_ability.cpp

@@ -131,6 +131,7 @@ void JSAbility::Show()
 
     HILOG_INFO(HILOG_MODULE_ACE, "LIFECYCLE: JS Ability will be shown");
     ACE_EVENT_PRINT(MT_ACE_FWK_ACTIVING, 0);
+    FatalHandler::GetInstance().SetExitingFlag(false);
     JSAbilityImpl *jsAbilityImpl = CastAbilityImpl(jsAbilityImpl_);
     jsAbilityImpl->Show();
     AsyncTaskManager::GetInstance().SetFront(true);