Stop modifying readonly properties

Author: greg0ire

tests/Doctrine/Tests/ORM/Cache/DefaultQueryCacheTest.php

@@ -504,14 +504,13 @@ public function testGetShouldIgnoreOldQueryCacheEntryResult(): void
                 ['identifier' => ['id' => 1]],
                 ['identifier' => ['id' => 2]],
             ],
+            microtime(true) - 100,
         );
         $entities = [
             ['id' => 1, 'name' => 'Foo'],
             ['id' => 2, 'name' => 'Bar'],
         ];
 
-        $entry->time = microtime(true) - 100;
-
         $this->region->addReturn('get', $entry);
 
         $this->region->addReturn(

tests/Doctrine/Tests/ORM/Functional/SecondLevelCacheQueryCacheTest.php

@@ -830,7 +830,7 @@ public function testQueryCacheLifetime(): void
             ->get($key);
 
         self::assertInstanceOf(QueryCacheEntry::class, $entry);
-        $entry->time /= 2;
+        $entry = new QueryCacheEntry($entry->result, $entry->time / 2);
 
         $this->cache->getQueryCache()
             ->getRegion()