1.8.0 release produces different full_path result

With 1.7.0
```
>>> for m in jsonpath_ng.parse('abc.*.def').find({"abc": {"foo": {"def": "bar"}}}): print(m.full_path)
... 
abc.foo.def
```

With 1.8.0:
```
>>> for m in jsonpath_ng.parse('abc.*.def').find({"abc": {"foo": {"def": "bar"}}}): print(m.full_path)
... 
((abc.foo).def)
```

This is with Python 3.10.14