fix(ssa refactor): Fix constant folding looping forever #1611
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Description
Problem*
If any loops are still present in the program, constant folding in the ssa refactor would loop forever since the visited block list was never updated.
Summary*
Adds the visited block to the visited block list
Example
Before:
After:
Documentation
This PR requires documentation updates when merged.
Additional Context
PR Checklist*
cargo fmton default settings.