OXDEV-8216: Use message in ModuleActivationExceptionTest instead of c…

…onstant

tests/Unit/Module/Exception/ModuleActivationExceptionTest.php

@@ -22,6 +22,6 @@ public function testException(): void
         $exception = new ModuleActivationException();
 
         $this->assertInstanceOf(ModuleActivationException::class, $exception);
-        $this->assertSame(ModuleActivationException::EXCEPTION_MESSAGE, $exception->getMessage());
+        $this->assertSame('An error occurred while activating the module.', $exception->getMessage());
     }
 }