EZP-26011: Content on the Fly embeds unreliable with the Solr Bundle

[dpobel]

JIRA: https://jira.ez.no/browse/EZP-26011
Requires ezsystems/content-on-the-fly-prototype-bundle#15

Description

To render the embed elements and the images in the RichText editor a search is done to load the corresponding Content(Info). Right after creating a Content, the search index might not be up to date yet, as a result the embed or the image added based on a Content that was just created with the Content on the Fly feature can not be done.

To avoid that, this patch changes the way the embed/image tag is rendered right after the usage of the Universal Discovery Widget to use the selection provided by the UDW instead of searching for the Content(Info).

Tests

manual tests + unit tests

[yannickroger]

+1

[andrerom]

+1 Note: We still need to find a way to omit using search for embeds for cases where user clicks directly publish before it's been indexed, and for cases where embeds might not have a location. Ref being able to do multi GET against content info api in REST and PHP later.