Intent of TestPartitionedSnapshot_MergeRoundTrip

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 1 test
- server/ 1 test
  - chasm/ 1 test
    
    TestNodeSuite/ 1 test
    
    go.temporal.io/server/chasm/TestNodeSuite/TestPartitionedSnapshot_MergeRoundTrip Introduced here