Add '@strict-properties' annotation to new Error/Exception classes

Author: derickr

ext/date/php_date.stub.php

@@ -747,38 +747,65 @@ public static function __set_state(array $array): DatePeriod {}
     public function getIterator(): Iterator {}
 }
 
+/**
+ * @strict-properties
+ */
 class DateError extends Error
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateObjectError extends DateError
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateRangeError extends DateRangeError
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateException extends Exception
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateInvalidTimeZoneException extends Exception
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateInvalidOperationException extends DateException
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateMalformedStringException extends DateException
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateMalformedIntervalStringException extends DateException
 {
 }
 
+/**
+ * @strict-properties
+ */
 class DateMalformedPeriodStringException extends DateException
 {
 }