PHP 8.4: allow Traits & Class defining same (compatible) properties

### Description

This is considered an error now, but should be possible, the same way it works with methods, so that also the new property hooks would work.

```php
trait TestTrait {
	public int $Var = 1;
	public function Func():int {return 1;}
}

class TestClass {
	use TestTrait;
	
	public int $Var = 2; // this is not allowed
	public function Func():int {return 2;} // this is ok
}
```