Manual backporting for 2.15.7 release #7837
Merged
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Description
Some backporting did not work automatically as there are more and more conflict when cherry-picking. In particular #7747 was impossible to cherry-pick without downgrading the typing because of massive change in mypy. I tried to keep the mypy enhancement by cherry-picking all the linter change from main but after more than one hour it was clear it's not reasonable. I'm hoping to do all the other backporting with the new action after #7826 is merged.