`SHOW QUERIES` no longer leaks queries from unauthorized databases

[devanbenz]

ETA: 1.12.3
PR: fix: fixes bug with authorizer leakage in show queries

Previously, non-admin users who ran SHOW QUERIES on a database they had access to could see queries running against other databases they were not authorized for. This has been fixed — non-admin users now only see queries on databases they have been granted access to.

This is a security-relevant behavior change that may be worth noting in release notes and/or the SHOW QUERIES documentation.

InfluxDB OSS and Enterprise 1.12.3+

[devanbenz]

This doesn't need to be documented