TrackParamTruthInitConfig: maxEtaForward=10 for B0 coverage

We should cover down to 5.5 mrad.
The new value eta=10 covers that:
```
>>> import numpy as np
>>> np.rad2deg(2*np.arctan(np.exp(-10)))
0.005202448727587163
```

src/algorithms/tracking/TrackParamTruthInitConfig.h

@@ -12,7 +12,7 @@ struct TrackParamTruthInitConfig {
     double maxVertexY       = 80  * dd4hep::mm;
     double maxVertexZ       = 200 * dd4hep::mm;
     double minMomentum      = 100 * dd4hep::MeV;
-    double maxEtaForward    = 6.0;
+    double maxEtaForward    = 10.0;
     double maxEtaBackward   = 4.1;
     double momentumSmear    = 0.1;