fix error on missing time constraint key

src/Service/Constraint/DateTimeConstraint.php

@@ -45,13 +45,13 @@ class DateTimeConstraint extends AbstractTimeConstraintUtils implements TimeCons
             $contraints = $this->addConstraint($contraints, $this->presentConstraint($periods));
         } else {
             $periods = $this->getPeriods($access);
-            if ($historical['present']) {
+            if ($historical['present'] ?? false) {
                 $contraints = $this->addConstraint($contraints, $this->presentConstraint($periods));
             }
-            if ($historical['past']) {
+            if ($historical['past'] ?? false) {
                 $contraints = $this->addConstraint($contraints, $this->pastConstraint($periods));
             }
-            if ($historical['future']) {
+            if ($historical['future'] ?? false) {
                 $contraints = $this->addConstraint($contraints, $this->futureConstraint($periods));
             }
         }