[otelcol] print-config feature-flag to beta

[jmacd]

Description

Enable print-config by default.

Link to tracking issue

Fixes #12369

Testing

I ran print-config in a recent release, working as intended.

Documentation

The print-config command documentation is up to date.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.25%. Comparing base (a9691ee) to head (3c58c4a).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #14149   +/-   ##
=======================================
  Coverage   92.24%   92.25%           
=======================================
  Files         658      658           
  Lines       41168    41171    +3     
=======================================
+ Hits        37977    37983    +6     
+ Misses       2184     2182    -2     
+ Partials     1007     1006    -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.