UI: Fixed merge additional info after save entity; Fixed updated alarm rules count

@@ -280,7 +280,11 @@ export class EntityDetailsPanelComponent extends PageComponent implements OnInit
 
   saveEntity() {
     if (this.detailsForm.valid) {
-      const editingEntity = mergeDeep(this.editingEntity, this.entityComponent.entityFormValue());
+      const editingEntity = {...this.editingEntity, ...this.entityComponent.entityFormValue()};
+      if (this.editingEntity.hasOwnProperty('additionalInfo')) {
+        editingEntity.additionalInfo =
+          mergeDeep((this.editingEntity as any).additionalInfo, this.entityComponent.entityFormValue()?.additionalInfo);
+      }
       this.entitiesTableConfig.saveEntity(editingEntity).subscribe(
         (entity) => {
           this.entity = entity;

@@ -42,7 +42,7 @@
 </mat-tab>
 <mat-tab *ngIf="entity" #alarmRules="matTab"
          label="{{'device-profile.alarm-rules-with-count' | translate:
-            {count: entity.profileData?.alarms?.length ? entity.profileData.alarms.length : 0}
+            {count: this.detailsForm.get('profileData.alarms').value?.length ? this.detailsForm.get('profileData.alarms').value.length : 0}
           }}">
   <div class="mat-padding" [formGroup]="detailsForm" *ngIf="alarmRules.isActive">
     <div formGroupName="profileData">