[BUG]Is the storage function will when gw can't connect to tb

[yehaha9876]

Describe the bug Recently i want modfiy gateway for case when it can't connect to tb, but it seems when mqtt disconnet there is't any data save in file. Over this time all of the event are lost.

Connector name (If bug in the some connector): I only test on modbus.

I modify modbus attr from 1 to 12 after stop tb, then start tb. only the last attr value 12 receved.

Versions (please complete the following information):

• OS: [e.g. centos 7.9]
• Thingsboard IoT Gateway version [3.5.1(master source code)]
• Python version[3.10.14]