Refactor LookupExtensionProperty to nest Autocomplete within Validation component

Author: maliming

framework/src/Volo.Abp.BlazoriseUI/Components/ObjectExtending/LookupExtensionProperty.razor

@@ -6,16 +6,17 @@
 
 <Field>
     <FieldLabel>@PropertyInfo.GetLocalizedDisplayName(StringLocalizerFactory)</FieldLabel>
-    <Autocomplete Data="@lookupItems"
-                  TItem="SelectItem<object>"
-                  TValue="object"
-                  TextField="item => item?.Text!"
-                  ValueField="item => item?.Value!"
-                  SelectedValue="@SelectedValue"
-                  SelectedValueChanged="@SelectedValueChanged"
-                  SearchChanged="@SearchFilterChangedAsync"
-                  Validator="@Validate"
-                  MinSearchLength="0"
-                  Disabled="IsReadonlyField">
-    </Autocomplete>
+    <Validation Validator="@Validate">
+        <Autocomplete Data="@lookupItems"
+                      TItem="SelectItem<object>"
+                      TValue="object"
+                      TextField="item => item?.Text!"
+                      ValueField="item => item?.Value!"
+                      SelectedValue="@SelectedValue"
+                      SelectedValueChanged="@SelectedValueChanged"
+                      SearchChanged="@SearchFilterChangedAsync"
+                      MinSearchLength="0"
+                      Disabled="IsReadonlyField">
+        </Autocomplete>
+    </Validation>
 </Field>