toMatchArray/Object wrong field fix

The functions toMatchArray and toMatchObject indicate that the wrong field is mismatching from the second loop on because the 'message' is overwritten and taken into the following loop. This patch creates a $second_message for the second test (value test) to keep the error message correct.

src/Mixins/Expectation.php

@@ -780,17 +780,16 @@ final class Expectation
         }
 
         foreach ($array as $key => $value) {
+            $message = '';
             Assert::assertArrayHasKey($key, $valueAsArray, $message);
 
-            if ($message === '') {
+            $second_message = $message !== '' ? $message : sprintf(
-                $message = sprintf(
                 'Failed asserting that an array has a key %s with the value %s.',
                 $this->export($key),
                 $this->export($valueAsArray[$key]),
             );
-            }
 
-            Assert::assertEquals($value, $valueAsArray[$key], $message);
+            Assert::assertEquals($value, $valueAsArray[$key], $second_message);
         }
 
         return $this;
@@ -815,15 +814,14 @@ final class Expectation
             /* @phpstan-ignore-next-line */
             $propertyValue = $this->value->{$property};
 
-            if ($message === '') {
+            $second_message = $message !== '' ? $message : sprintf(
-                $message = sprintf(
                     'Failed asserting that an object has a property %s with the value %s.',
                     $this->export($property),
                     $this->export($propertyValue),
                 );
             }
 
-            Assert::assertEquals($value, $propertyValue, $message);
+            Assert::assertEquals($value, $propertyValue, $second_message);
         }
 
         return $this;