Intent of manager.go ×3

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 3 tests
- server/ 3 tests
  - common/ 3 tests
    
    searchattribute/ 3 tests
    
    TestSearchAttributesManagerSuite/ 3 tests
    
    go.temporal.io/server/common/searchattribute/TestSearchAttributesManagerSuite/TestSaveSearchAttributesCache_EmptyIndex Introduced here
    
    go.temporal.io/server/common/searchattribute/TestSearchAttributesManagerSuite/TestSaveSearchAttributes_NewIndex Introduced here
    
    go.temporal.io/server/common/searchattribute/TestSearchAttributesManagerSuite/TestSaveSearchAttributes_UpdateIndex Introduced here