Fix: units which used a 'string'-validator might not detect the actual denomination. They have now been forbidden and fixed

assets/layers/charging_station/charging_station.json

@@ -2403,7 +2403,8 @@
         "de": "Wie lange darf man hier maximal parken?"
       },
       "freeform": {
-        "key": "maxstay"
+        "key": "maxstay",
+        "type": "pfloat"
       },
       "render": {
         "en": "One can stay at most <b>{canonical(maxstay)}</b>",
@@ -3329,4 +3330,4 @@
     },
     "neededChangesets": 10
   }
-}
+}

assets/layers/charging_station/charging_station.proto.json

@@ -564,7 +564,8 @@
         "nl": "Hoelang mag een voertuig hier blijven staan?"
       },
       "freeform": {
-        "key": "maxstay"
+        "key": "maxstay",
+        "type": "pfloat"
       },
       "render": {
         "en": "One can stay at most <b>{canonical(maxstay)}</b>",
@@ -1049,4 +1050,4 @@
     },
     "neededChangesets": 10
   }
-}
+}

assets/layers/entrance/entrance.json

@@ -515,7 +515,8 @@
         "cs": "Jaká je šířka těchto dveří/vchodu?"
       },
       "freeform": {
-        "key": "width"
+        "key": "width",
+        "type": "pfloat"
       }
     },
     {