fix: DH-23028: Don't freeze protobuf message

Author: niloc132

web/client-api/src/main/java/io/deephaven/web/client/api/widget/calendar/JsBusinessCalendar.java

@@ -27,7 +27,6 @@ public class JsBusinessCalendar {
 
     public JsBusinessCalendar(FigureDescriptor.BusinessCalendarDescriptor businessCalendarDescriptor) {
         this.businessCalendarDescriptor = businessCalendarDescriptor;
-        JsObject.freeze(this.businessCalendarDescriptor);
         timeZone = JsTimeZone.getTimeZone(businessCalendarDescriptor.getTimeZone());
         businessPeriods = businessCalendarDescriptor.getBusinessPeriodsList().stream()
                 .map(JsBusinessPeriod::new)