ENGCOM-5661: resolve 'Layered Navigation Price Step' must validate number issue24169 #24170

 - Merge Pull Request #24170 from edenduong/magento2:2.3-bugfix/validate_layered_range_issue24169
 - Merged commits:
   1. a041a3e

Author: magento-engcom-team

app/code/Magento/Catalog/view/adminhtml/ui_component/category_form.xml

@@ -349,6 +349,7 @@
                 <settings>
                     <validation>
                         <rule name="required-entry" xsi:type="boolean">true</rule>
+                        <rule name="validate-number" xsi:type="boolean">true</rule>
                     </validation>
                     <additionalClasses>
                         <class name="admin__field-small">true</class>