fix(pino): Allow custom namespaces for `msg` and `err`

[github-actions]

Note

The pull request "fix(pino): Allow custom namespaces for msg and err" was created by @s1gr1d but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

Pino allows using custom namespaces and this PR makes sure they are actually used.

The symbols are extracted with a method, although Pino would allow getting them from pino.symbols (docs). However, we only have access to the logger instance.

Closes #issue_link_here

[linear]

JS-1352

[s1gr1d]

Closing, because I linked the original issue and we don't need the auto-generated one