[META] Convert queries to entity field query v2

Follow up for #1498674: Refactor node properties to multilingual and #1497374: Switch from Field-based storage to Entity-based storage

Problem/Motivation

There are some database queries which should be converted to EFQ2. See also comment 152 #1498674-152: Refactor node properties to multilingual

Proposed resolution

TBD

Remaining tasks

• List one example query.
• Find all the queries which require converting.
• Open an issue for each query found and update this meta with issue number.

Issue list

User interface changes

N/A

API changes

None expected.