replace all cases of new|wrap|stack(...).WithClues(ctx) with the flattened new|wrap|stackWC(ctx, ...) functions introduced in the latest clues bump.
Other changes added:
* remove WithClues builders when the error producer already called it.
* corrected some usages of ictx within loops.
no logic changes, just cleanup.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🧹 Tech Debt/Cleanup
#### Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E