fix: potential Array.get!Internal leaks part 2

[hargoniX]

Part 2 for #13147, adding the necessary constant semantics to the interpreter.

[mathlib-lean-pr-testing]

Mathlib CI status (docs):

• ❗ Batteries/Mathlib CI will not be attempted unless your PR branches off the nightly-with-mathlib branch. Try git rebase bc5210d52a97c485ace1e4abc95ed7da6ba5b707 --onto 4786e082dca22873d14d2a5b9b7c8843380c6e78. You can force Mathlib CI using the force-mathlib-ci label. (2026-03-27 03:04:25)

[leanprover-bot]

Reference manual CI status:

• ❗ Reference manual CI will not be attempted unless your PR branches off the nightly-with-manual branch. Try git rebase bc5210d52a97c485ace1e4abc95ed7da6ba5b707 --onto cfa8c5a036d6990635c6ec50b02d0e806995cec3. You can force reference manual CI using the force-manual-ci label. (2026-03-27 03:04:26)