refactor(semantic): move AstKind::Class handling from leave_kind to visit_class

[camc314]

Part of #18098.

[camc314]

• refactor(semantic): move Function and ArrowFunctionExpression handling to visit methods #12630 : 2 dependent PRs (#12631 , #12632 )
• refactor(semantic): move AstKind::Class handling from leave_kind to visit_class #12629 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12629 will not alter performance

_{Comparing c/07-30-refactor_semantic_move_astkind_class_handling_from_leave_kind_to_visit_class (8369bbd) with main (5ff286a)}

Summary

✅ 34 untouched benchmarks

[overlookmotel]

Merge activity

• Jul 31, 8:09 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 31, 8:39 AM UTC: overlookmotel added this pull request to the Graphite merge queue.
• Jul 31, 8:47 AM UTC: Merged by the Graphite merge queue.