[ownership] Change ReturnInst to have its ValueOwnershipKind stored within it rather than always recomputing from the function type. #34644
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…ithin it rather than always recomputing from the function type. This allows us to hoist the error case of having a function signature with conflicting ownership requirements into the creation of the return inst instead of at the time of computing Operand Constraints. This is the last part of the Operand Constraint computation that can fail that once removed will let me use fail to mean any constriant is allowed.
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This allows us to hoist the error case of having a function signature with
conflicting ownership requirements into the creation of the return inst instead
of at the time of computing Operand Constraints.
This is the last part of the Operand Constraint computation that can fail that
once removed will let me use fail to mean any constriant is allowed.