Use borrowed references for `LOAD_CONST`

[markshannon]

Feature or enhancement

Proposal:

We now support borrowed (tagged) references on the stack. Like LOAD_FAST_BORROW we can use borrowed references in LOAD_CONST as the value in the constants array is guaranteed to outlive any variables in the frame.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• GH-134282: Simplify LOAD_CONST: Always borrow the reference #134284