HS: Fix input_kp type for export.

src/Solver/Mage.py

@@ -491,7 +491,7 @@ class Mage(CommandLineSolver):
 
                 f.write(
                     '* ouvrage au pk ' +
-                    f"{hs.input_kp:>12.1f}" + ' ' +
+                    f"{float(hs.input_kp):>12.1f}" + ' ' +
                     hs.name + '\n'
                 )
 
@@ -510,7 +510,7 @@ class Mage(CommandLineSolver):
 
                     f.write(
                         f"{sin_dict[bhs._type]} " +
-                        f"{reach_id} {hs.input_kp:>12.3f} {param_str} " +
+                        f"{reach_id} {float(hs.input_kp):>12.3f} {param_str} " +
                         f"{name}\n"
                     )