[Merged by Bors] - refactor(MeasureTheory): golf Mathlib/MeasureTheory/Constructions/Pi#38353
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[Merged by Bors] - refactor(MeasureTheory): golf Mathlib/MeasureTheory/Constructions/Pi#38353yuanyi-350 wants to merge 3 commits intoleanprover-community:masterfrom
Mathlib/MeasureTheory/Constructions/Pi#38353yuanyi-350 wants to merge 3 commits intoleanprover-community:masterfrom
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PR summary ee3a5404e5Import changes for modified filesNo significant changes to the import graph Import changes for all files
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#38353) - refactors `MeasureTheory/Constructions/Pi` by moving `pi_map_piCongrLeft` next to `measurePreserving_piCongrLeft` and deriving it directly from `.map_eq` Extracted from #38104 [](https://gitpod.io/from-referrer/)
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MeasureTheory/Constructions/Piby movingpi_map_piCongrLeftnext tomeasurePreserving_piCongrLeftand deriving it directly from.map_eqExtracted from #38104