fix(file-index):解决关闭所有索引后再打开监听丢失的问题

libsearch/index/index-scheduler.cpp

@@ -121,6 +121,7 @@ void IndexScheduler::stop(BatchIndexer::Targets target)
     }
     if(m_indexStop.LOAD && m_contentIndexStop.LOAD && m_ocrContentIndexStop.LOAD) {
         m_fileWatcher.removeWatch();
+        m_watchInstalled = false;
         m_threadPool.clear();
         m_threadPool.waitForDone(-1);
         m_threadPoolForRTUpdate.clear();