Preserve extend_lifetime during dead instruction code elimination. #77575
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during the MoveOnlyWrappedTypeEliminator pass. Such instructions are only valid in RAW SIL. This pass generally removes marker instructions that are only used for ownership diagnostics. Fixes rdar://139450982 ([GH:swiftlang#77451] Assert failure on `extend_lifetime` verify with `onone-simplification` pass disabled)
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And remove all trivial extend_lifetime instructions during the MoveOnlyWrappedTypeEliminator pass.