Fix build and improve exception handling (#10726)

The PercentType and QuantityType can also throw an IllegalArgumentException.

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.iaqualink/src/main/java/org/openhab/binding/iaqualink/internal/handler/IAqualinkHandler.java

@@ -457,7 +457,7 @@ public class IAqualinkHandler extends BaseThingHandler {
                 default:
                     return StringType.valueOf(value);
             }
-        } catch (NumberFormatException e) {
+        } catch (IllegalArgumentException e) {
             return UnDefType.UNDEF;
         }
     }