Fix random redirect after saving asset search

Sometimes after saving an asset search, user is redirect to a different saved search. Not reproducible in every case, but managed to reproduce as follows:

• Click on asset search from the left menu.
• Select Video (should return only 3 results on nightly.nuxeo.com).
• Save search as "my videos".
• Create another search named "Karin's Search" as follows:
  • Picture
  • image/png
  • Width Between 500 px and 1,500 px
  • Height Between 500 px and 1,500 px
• Save.

Immediately after saving, user is redirected to "my videos" search.

(This failed two tests regarding shared searches as the wrong search was shared)