AC-9831: Block template render enhancement

	 * fixed unit and integration tests

Author: rizwankhgl

dev/tests/integration/testsuite/Magento/Framework/View/Element/AbstractBlockTest.php

@@ -573,7 +573,7 @@ public function testGetCacheKey()
         $this->assertNotEquals($name, $key);
 
         $block->setCacheKey('key');
-        $this->assertEquals(AbstractBlock::CACHE_KEY_PREFIX . 'key', $block->getCacheKey());
+        $this->assertEquals(AbstractBlock::CUSTOM_CACHE_KEY_PREFIX . 'key', $block->getCacheKey());
     }
 
     /**

lib/internal/Magento/Framework/View/Test/Unit/Element/AbstractBlockTest.php

@@ -239,7 +239,7 @@ public function testGetCacheKey()
     {
         $cacheKey = 'testKey';
         $this->block->setData('cache_key', $cacheKey);
-        $this->assertEquals(AbstractBlock::CACHE_KEY_PREFIX . $cacheKey, $this->block->getCacheKey());
+        $this->assertEquals(AbstractBlock::CUSTOM_CACHE_KEY_PREFIX . $cacheKey, $this->block->getCacheKey());
     }
 
     /**