Intent of markdown-only_commit_is_deprioritized

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
  - tools/ 1 test
    
    flakereport/ 1 test
    
    TestCommitPriorWeight/ 1 test
    
    go.temporal.io/server/tools/flakereport/TestCommitPriorWeight/markdown-only_commit_is_deprioritized Introduced here