fixes for nightly-2025-03-28

Author: kim-em

Diff for: Batteries/Tactic/Lint/Simp.lean

@@ -110,7 +110,7 @@ https://leanprover-community.github.io/mathlib_docs/notes.html#simp-normal%20for
     unless ← isSimpTheorem declName do return none
     let ctx ← Simp.Context.mkDefault
     checkAllSimpTheoremInfos (← getConstInfo declName).type fun {lhs, rhs, isConditional, ..} => do
-      let isRfl := (← isRflTheorem declName).get
+      let isRfl ← isRflTheorem declName
       let ({ expr := lhs', proof? := prf1, .. }, prf1Stats) ←
         decorateError "simplify fails on left-hand side:" <|
           if !isRfl then