`NOT_TAKEN` instructions need to be added after optimization

[markshannon]

The NOT_TAKEN instruction is added during code gen, but can be left when jumps are removed by the optimizer.

We should probably add the NOT_TAKEN instructions in the assembler after optimization, as suggested in #122564 (comment)

Linked PRs

• GH-128533: Add NOT_TAKEN instruction after bytecode optimization. #128554