Check store version bound while creating V2 client #616
Description
Feature Request
The older version of the TiKV cluster (<= v6.1.0) allows the request from the newer V2 client to write which might break some assumptions of API V2 protocol like the format of the region (its bounds are encoding in memory-comparable format). But with version 6.1.0 TiKV, the check is added. We should add some store version checks while constructing the TiSession.