improvement searchBrakingPower: reset retryCount after linear search

in case the braking power is very high (e.g., steep downhill) the linear search may take many iterations leaving no iterations for the binary search

VectoCore/Models/SimulationComponent/Impl/Driver.cs

@@ -483,6 +483,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 				// from then on the searchInterval can be bisected.
 				if (origDelta.Sign() != delta.Sign()) {
 					intervalFactor = 0.5;
+					retryCount = 0; // again max. 100 iterations for the binary search...
 				}
 
 				searchInterval *= intervalFactor;