opt: respect disabled rules in reorderjoins test directive

Release note: None

Author: mgartner

pkg/sql/opt/testutils/opttester/reorder_joins.go

@@ -33,6 +33,9 @@ import (
 func (ot *OptTester) ReorderJoins() (string, error) {
 	ot.builder.Reset()
 	o := ot.makeOptimizer()
+	o.NotifyOnMatchedRule(func(ruleName opt.RuleName) bool {
+		return !ot.Flags.DisableRules.Contains(int(ruleName))
+	})
 	jof := newJoinOrderFormatter(o)
 
 	// joinsConsidered counts the number of joins which joinOrderBuilder attempts