Make Zend_Validate_Date work as expected under PHP8.0

By additionally catching an error where only an exception used to be
caught and thus returning false on Zend_Validate_Date::isValid the
validator now behaves the same under PHP8+
This also means that we don't need to catch the error in the test method
anymore.

packages/zend-validate/library/Zend/Validate/Date.php

@@ -218,6 +218,8 @@ private function _checkFormat($value)
         } catch (Exception $e) {
             // Date can not be parsed
             return false;
+        } catch (Error $e) {
+            return false;
         }
 
         if (((strpos($this->_format, 'Y') !== false) or (strpos($this->_format, 'y') !== false)) and

tests/Zend/Validate/DateTest.php

@@ -208,11 +208,7 @@ public function testLocaleContructor()
      */
     public function testNonStringValidation()
     {
-        try {
-            $this->assertFalse($this->_validator->isValid(array(1 => 1)));
-        } catch (Error $e) {
-            $this->assertTrue($e instanceof TypeError);
-        }
+        $this->assertFalse($this->_validator->isValid(array(1 => 1)));
     }
 
     /**