tests fail to compile: error: no member named 'init' in 'Wavefunction'

```
testEnergyFunctional.cpp:112:8: error: no member named 'init' in 'Wavefunction'
  112 |   s.wf.init();
      |   ~~~~ ^
1 error generated.
```

Version: 1_78_3
clang-19
FreeBSD 14.2