refactor(ast): unify AstVisitorBase Stmt.Expression handler name (#1250)

Compilation/StringAccumulatorPromotionAnalyzer.cs

@@ -108,7 +108,7 @@ private void HandleDeclaration(Token name, Expr? initializer)
                 Visit(initializer);
         }
 
-        protected override void VisitExpressionStmt(Stmt.Expression stmt)
+        protected override void VisitExpression(Stmt.Expression stmt)
         {
             // Permitted append in statement position (result discarded): `s = s + E` / `s += E`
             // with E statically string. Consume by visiting ONLY E — not the target, not the inner
@@ -124,7 +124,7 @@ protected override void VisitExpressionStmt(Stmt.Expression stmt)
                     Visit(ca.Value);
                     return;
             }
-            base.VisitExpressionStmt(stmt);
+            base.VisitExpression(stmt);
         }
 
         protected override void VisitGet(Expr.Get expr)

Parsing/Visitors/AstVisitorBase.cs

@@ -91,7 +91,7 @@ public virtual void Visit(Stmt stmt)
 
         switch (stmt)
         {
-            case Stmt.Expression s: VisitExpressionStmt(s); break;
+            case Stmt.Expression s: VisitExpression(s); break;
             case Stmt.Var s: VisitVar(s); break;
             case Stmt.Const s: VisitConst(s); break;
             case Stmt.Function s: VisitFunction(s); break;
@@ -431,7 +431,7 @@ protected virtual void VisitClassExpr(Expr.ClassExpr expr)
 
     #region Statement Visitors - Default implementations traverse children
 
-    protected virtual void VisitExpressionStmt(Stmt.Expression stmt)
+    protected virtual void VisitExpression(Stmt.Expression stmt)
     {
         Visit(stmt.Expr);
     }