core: allow braking curve to go beyond path end

Signed-off-by: Erashin <[email protected]>

Author: Erashin

core/envelope-sim/src/main/kotlin/fr/sncf/osrd/envelope_sim/etcs/ETCSBrakingCurves.kt

@@ -116,14 +116,12 @@ private fun computeBrakingCurve(
     targetSpeed: Double,
     brakingType: BrakingType
 ): EnvelopePart {
-    // if the stopPosition is below zero, or above path length, the input is invalid
-    if (targetPosition <= 0.0 || targetPosition > context.path.length)
+    // If the stopPosition is below zero, the input is invalid
+    if (targetPosition <= 0.0)
         throw RuntimeException(
             String.format(
-                "Trying to compute ETCS braking curve from out of bounds ERTMS marker board (position = %f," +
-                    "path length = %f)",
-                targetPosition,
-                context.path.length
+                "Trying to compute ETCS braking curve from out of bounds ERTMS end/limit of authority: %s",
+                targetPosition
             )
         )
     val partBuilder = EnvelopePartBuilder()