Scott McMurray 9be16ebe89 Refactoring after the PlaceValue addition
I added `PlaceValue` in 123775, but kept that one line-by-line simple because it touched so many places.

This goes through to add more helpers & docs, and change some `PlaceRef` to `PlaceValue` where the type didn't need to be included.

No behaviour changes.
2024-05-10 20:09:37 -07:00
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2024-05-01 22:19:11 -04:00