refactor: cut WITH and CTE inference over to Next in M4

[tiagolauer]

Summary

• route WITH and CTE inference through the Next compiler
• preserve public row and parameter inference across supported CTE behavior
• freeze the post-cutover performance baseline

Verification

• npm test: 217 passed, 36 skipped
• architecture fitness checks passed
• npm run test:perf: 225,590 instantiations, matching baseline and below the 230,000 budget
• npm run test:package passed

Stack

Depends on #360.