fix test

Author: malsuke

tests/PHPStan/Analyser/AnalyserIntegrationTest.php

@@ -895,7 +895,7 @@ public function testBug7554(): void
 		$this->assertSame(sprintf('Parameter #1 $%s of function count expects array|Countable, list<array<int, int<0, max>|string>>|false given.', PHP_VERSION_ID < 80000 ? 'var' : 'value'), $errors[0]->getMessage());
 		$this->assertSame(26, $errors[0]->getLine());
 
-		$this->assertSame('Cannot access offset int<1, max> on list<array{string, int<0, max>}>|false.', $errors[1]->getMessage());
+		$this->assertSame('Cannot access offset int<1, max> on list<array{non-empty-string, int<0, max>}>|false.', $errors[1]->getMessage());
 		$this->assertSame(27, $errors[1]->getLine());
 	}