Intent of TestIsVersionHistoryItemsInSameBranch_SameBranch2_Return_True, TestIsVersionHistoryItemsInSameBranch_DifferentBranch2_Return_False

All 2 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 2 tests
- server/ 2 tests
  - common/ 2 tests
    
    persistence/ 2 tests
    
    versionhistory/ 2 tests
    
    TestVersionHistoriesSuite/ 2 tests
    
    go.temporal.io/server/common/persistence/versionhistory/TestVersionHistoriesSuite/TestIsVersionHistoryItemsInSameBranch_DifferentBranch2_Return_False Introduced here
    
    go.temporal.io/server/common/persistence/versionhistory/TestVersionHistoriesSuite/TestIsVersionHistoryItemsInSameBranch_SameBranch2_Return_True Introduced here