Intent of filter_custom_search_attribute

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
  - service/ 3 tests
    
    worker/ 3 tests
    
    scheduler/ 3 tests
    
    TestValidateVisibilityQuery/ 3 tests
    
    go.temporal.io/server/service/worker/scheduler/TestValidateVisibilityQuery/filter_TemporalSchedulePaused_and_custom_search_attribute Inherited filter_TemporalSchedulePaused_and_custom_search_attribute
    
    go.temporal.io/server/service/worker/scheduler/TestValidateVisibilityQuery/filter_custom_search_attribute Introduced here
    
    go.temporal.io/server/service/worker/scheduler/TestValidateVisibilityQuery/filter_multiple_custom_search_attribute Inherited filter_multiple_custom_search_attribute