Intent of Valid_component_with_one_data_field

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
    
    TestFieldsIteratorSuite/ 1 test
    
    TestFieldsOf/ 1 test
    
    go.temporal.io/server/chasm/TestFieldsIteratorSuite/TestFieldsOf/Valid_component_with_one_data_field Introduced here