Backend - Block & Transaction Count Updation For Channel And Chaincode Tab w.r.t Purge

[saundarya-saurabh]

What would you like to be added?

This feature helps to update the total Transaction Count And Block Count in The Channels And Chaincode Tabs Respectively based on Purging Of Data .

Why is this needed?

After Purging was implemented the earlier feature of total transaction count and block count in the channels and chaincode tabs wasn't updating correctly so we needed to implement this feature so that the count gets updated correctly.