Added providerNumber datum and now nulling it out when service-zip changes

src/layouts/service-location/service-location.vue

@@ -135,6 +135,7 @@ export default {
             mobileFeePart: null,
             zipContainsMilitaryBase: false,
             selectedAppointmentType: null,
+            providerNumber: null,
         };
     },
     async beforeRouteEnter(to, from, next) {
@@ -192,6 +193,7 @@ export default {
                 if (newValue.zipCode !== this.zipCode) {
                     this.resetMobileLocation();
                     this.selectedAppointmentType = null;
+                    this.providerNumber = null;
                 }
 
                 this.state = newValue.state;