parser: fix close_scope() missing when field.name is sort, sorted(fix#20436)

vlib/v/parser/parser.v

@@ -3315,7 +3315,7 @@ fn (mut p Parser) dot_expr(left ast.Expr) ast.Expr {
 		next_token: p.tok.kind
 	}
 
-	if is_filter {
+	if is_filter || field_name == 'sort' || field_name == 'sorted' {
 		p.close_scope()
 	}
 	return sel_expr

vlib/v/tests/selectorexpt_field_name_test.v

@@ -0,0 +1,15 @@
+// for issue 20436
+// phenomenon:
+// close_scope() is lost when selectexpr has two special names: sort and sorted.
+// This problem can be tested using closure arguments.
+struct Foo {
+	sort []int
+}
+
+fn test_main() {
+	f := Foo{}
+
+	fn [f] () {
+		assert f.sort.len == 0
+	}()
+}