Issue with WFS added via Query params

[mahmoudadel54]

Description

Loading this URL:
http://localhost:8081/?debug=true/#/viewer/new?actions=%5B%7B%22type%22%3A%22CATALOG%3AADD_LAYERS_FROM_CATALOGS%22%2C%22layers%22%3A%5B%22geosolutions%3Astates_training%22%5D%2C%22sources%22%3A%5B%7B%22type%22%3A%22wfs%22%2C%22url%22%3A%22https%3A%2F%2Fgs-stable.geosolutionsgroup.com%2Fgeoserver%2Fwfs%3Frequest%3DGetCapabilities%26service%3DWFS%22%7D%5D%7D%5D

the WFS layer is added to the map but the layer is not visible: no GetFeature request performed by MS

Expected Result
WFS layer should be added to map and TOC and be visible + GetFeature request should be performed by MS normally.

Current Result
if the URL includes queryString, the layer doesn't added to map and not visible.

Investigation outcome:

WFS's getFeatureURL doesn't allow merging parameters correctly. Format parameter should specify search: undefined to allow formulation of the url and params merging correctly. Check if this change is required elsewhere with similar function wrt WFS

• 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

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