[migration] Improve update of in-memory schema during 3.18 CWAttribute.defaultval change We weren't updating the schema properly so a bunch of structures still had the old rdef with 'String' as object. That caused failures to add new attributes later in the migration as their default value would be a Binary object but the schema would expect a String. Closes #3683640

[migration] always rebuild infered relation This was skipped for some bad reason (see 12ad88615a12 which introduced the change). Fix for #231956 in Yams is necessary to allow this cset: during a migration, we want to always reinfer relations while allowing explicit redefinition of an infered relation later. Else, we may run the migration with missing parts of the schema (the one that should have been infered). Closes #3685463.

Backout "[web/navigation] use add_onload instead of inline javascript href" This reverts changeset 170e1437948d, for at least two reasons: the PageNavigationSelect component was not updated for the new type of navigation links, and external cubes defining View.page_navigation_url exist in the wild and also got broken navigation links. This reopens #3501626 and closes #3677945.