Fix visibility of saved search parameters

When configuring:

• Nuxeo 9.10 (HF45) + WebUI
• 1 page provider in Modeler
• the associated pageprovider form and results in Designer
• the default associated drawer search tab
• start Nuxeo, deploy the project, launch a search, save the search, fetch the saved search

You can notice that in the fetched search, the parameters are not visible
However, hitting the "search" button, the saved search is done with arguments

Expected result: if parameters are taken into account, they should appear