[pkg/telemetryquerylanguage] Concat factory should log when passed unprintable values

[evan-bradley]

Describe the bug
The Concat factory function added in #13120 does not log if non-printable values are passed to it.

Steps to reproduce
Pass a map or an array to the Concat factory function. Nothing is inserted into the resulting string, but the user is not notified.

What did you expect to see?
A log message should be printed informing the user that one of the values they passed is not printable, to ensure they are aware of it and can fix the problem.

Additional context
Relates to #12649.

[evan-bradley]

I can take this issue.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• pkg/ottl: @TylerHelmuth @kentquirk @bogdandrutu @evan-bradley

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• pkg/ottl: @TylerHelmuth @kentquirk @bogdandrutu @evan-bradley

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[evan-bradley]

Solved as part of #16519.