PORT: put BP on first code line (#7324)

[DavidKutu]

• put BP on first code line

• better way

• don't set a breakpoint if its all comments or empty
  lines

• PR comments

For #7339

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR).
• Title summarizes what is changing.
• Has a news entry file (remember to thank yourself!).
• Appropriate comments and documentation strings in the code.
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated.
• Test plan is updated as appropriate.
• package-lock.json has been regenerated by running npm install (if dependencies have changed).

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (release-2021.08.203@7fee5d2). Click here to learn what that means.
The diff coverage is n/a.

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  Misses                         ?    7148           
  Partials                       ?    1184