SQL table alias "user" invalid for PostgreSQL

Problem/Motivation

In WebformSubmissionLogManager::getQuery() the database table users_field_data gets aliased to user.

Since user is a reserved term in PostgreSQL the query fails and raises an exception.

SQLSTATE[42601]: Syntax error: 7 ERROR: syntax error at or near "."
LINE 6: ...T OUTER JOIN "users_field_data" "user" ON log.uid = user.uid
^: SELECT COUNT(*) AS "expression"
FROM
(SELECT 1 AS "expression"
FROM
"webform_submission_log" "log"
LEFT OUTER JOIN "users_field_data" "user" ON log.uid = user.uid
LEFT OUTER JOIN "webform_submission" "submission" ON log.sid = submission.sid
WHERE ("log"."webform_id" = :db_condition_placeholder_0) AND ("log"."sid" = :db_condition_placeholder_1)) "subquery";

See PostgreSQL documentation appendix for reference.

Steps to reproduce

Open route entity.webform_submission.edit_form on any submission

Proposed resolution

Rename the alias user to user_data

Remaining tasks

apply fix

User interface changes

none

API changes

none

Data model changes

none