feat: add ground evaluation for And/Or in Sym.Simp

[wkrozowski]

This PR adds evalPropAnd and evalPropOr to the Sym.Simp ground term evaluator, short-circuiting And and Or expressions when either operand is True or False. Specialized zero-argument Sym lemmas are used for the fully-ground cases (True ∧ False, etc.), while the standard true_and/false_or/etc. lemmas handle the mixed cases.

🤖 Generated with Claude Code

[wkrozowski]

!bench

[leanprover-radar]

Benchmark results for 3a909cd against 8ed6b30 are in! @wkrozowski

• 🟥 build//instructions: +608.2M (+0.00%)

Large changes (1✅)

• ✅ cbv tactic (evaluating Decidable.decide)//instructions: -40.0G (-45.98%)

Small changes (2🟥)

• 🟥 build/module/Init.Sym.Lemmas//instructions: +39.2M (+2.05%)
• 🟥 build/module/Lean.Meta.Sym.Simp.EvalGround//instructions: +1.2G (+5.05%) (reduced significance based on *//lines)

[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 8ed6b30084dfc1d2fe303dbc7a8d1c435dac6655 --onto e7e3588c973226e85d79ed0f3154cfca79b61c6f. You can force Mathlib CI using the force-mathlib-ci label. (2026-02-23 20:22:44)

[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 8ed6b30084dfc1d2fe303dbc7a8d1c435dac6655 --onto 8038a8b8904f89ad9542c8eda11379f8f006eab1. You can force reference manual CI using the force-manual-ci label. (2026-02-23 20:22:46)