Auto merge of #115105 - cjgillot:dest-prop-default, r=oli-obk

Enable DestinationPropagation by default.

~~Based on rust-lang/rust#115291

This PR proposes to enable the destination propagation pass by default.
This pass is meant to reduce the amount of copies present in MIR.

At the same time, this PR removes the `RenameReturnPlace` pass, as it is currently unsound.
`DestinationPropagation` is not limited to `_0`, but does not handle borrowed locals.

Author: bors