Issue editing multiple fields in MapStore Attribute Table

[mahmoudadel54]

The bug is with editing multiple attributes in Attribute Table for which only one of them is saved.
Basically MapStore is performing WFS-T request with a wrong XML syntax in this case.
The body of the XML is:

<wfs:Transaction service="WFS" version="1.1.0"
	xmlns:wfs="http://www.opengis.net/wfs"
	xmlns:gml="http://www.opengis.net/gml"
	xmlns:ogc="http://www.opengis.net/ogc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wfs"
	xmlns:mapstore="http://gs-stable.geo-solutions.it/geoserver/mapstore">
	<wfs:Update typeName="mapstore:Types">
		<wfs:Property>
			<wfs:Name>Integer</wfs:Name>
			<wfs:Value>20</wfs:Value>
		</wfs:Property>
		<ogc:Filter>
			<ogc:FeatureId fid="Types.1"/>
		</ogc:Filter>
	</wfs:Update>,
        
	<wfs:Update typeName="mapstore:Types">
		<wfs:Property>
			<wfs:Name>Long</wfs:Name>
			<wfs:Value>33</wfs:Value>
		</wfs:Property>
		<ogc:Filter>
			<ogc:FeatureId fid="Types.1"/>
		</ogc:Filter>
	</wfs:Update>
</wfs:Transaction>

While for editing multiple attributes it should be something like the following:

<wfs:Transaction service="WFS" version="1.1.0"
	xmlns:wfs="http://www.opengis.net/wfs"
	xmlns:gml="http://www.opengis.net/gml"
	xmlns:ogc="http://www.opengis.net/ogc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wfs"
	xmlns:mapstore="http://gs-stable.geo-solutions.it/geoserver/mapstore">
	<wfs:Update typeName="mapstore:Types">
		<wfs:Property>
			<wfs:Name>Integer</wfs:Name>
			<wfs:Value>20</wfs:Value>
		</wfs:Property>,
		
		<wfs:Property>
			<wfs:Name>Long</wfs:Name>
			<wfs:Value>33</wfs:Value>
		</wfs:Property>
		<ogc:Filter>
			<ogc:FeatureId fid="Types.1"/>
		</ogc:Filter>
	</wfs:Update>
</wfs:Transaction>

How to reproduce

DRAFT LIST OF STEPS

• Open a map with a geoserver layer that can be edited for testing
• Edit multiple attribute values

Expected Result

All edited attributes are persisted as expected

Current Result

Only one of them is saved

• Not browser related

Browser info

(use this site: https://www.whatsmybrowser.org/ for non expert users)

Browser Affected	Version
Internet Explorer
Edge
Chrome
Firefox
Safari

Other useful information