Move dag_processing.processor_timeouts to counters section from gauges

[yeachan153]

closes: #21897

The metric dag_processing.processor_timeouts is incorrectly listed as a Gauge in the documentation, when in reality it is a counter.

[boring-cyborg]

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[o-nikolas]

lgtm! I wonder if there is an easy way to do a bulk grep for any other miss-labeled metrics 🤔

[github-actions]

The PR is likely ready to be merged. No tests are needed as no important environment files, nor python files were modified by it. However, committers might decide that full test matrix is needed and add the 'full tests needed' label. Then you should rebase it to the latest main or amend the last commit of the PR, and push it with --force-with-lease.

[yeachan153]

@uranusjr would you mind merging this as well please? I do not have permissions to merge this PR :)

[yeachan153]

lgtm! I wonder if there is an easy way to do a bulk grep for any other miss-labeled metrics 🤔

Thanks for reviewing! I don't have any ideas to do that in bulk, LMK if you have any ideas 🙂

[boring-cyborg]

Awesome work, congrats on your first merged pull request!