cubicweb #8634417 'siteinfo' view reloads cubes *twice* [validation pending]

2 Repository objects are created to process the request, when they should be reusing the current repo object instead.

prioritynormal
typebug
done in3.22.0
load0.500
load left0.000
closed by#846e5676ca39 [web] Stop using config.repository()
patch[web] Stop using config.repository() [applied][web] Stop using webconfig.vc_config() [applied]