[java] LooseCoupling must ignore class literals: ArrayList.class

**Affects PMD Version:** 

6.23.0.

**Description:**

**LooseCoupling** must ignore class literals. For Example **ArrayList.class**

**Code Sample demonstrating the issue:**

```
void someMethod(Object o){
       if ( o.getClass() == ArrayList.class ) { // This case must be ignored by rule!
             // do something
       }
}
```

**Running PMD through:** *Maven*
