[activity] Outdated PushEvent payload assumption causes the plugin to fail

[EndBug]

The plugin encounters an error while rendering:

[
    {
      name: 'activity',
      result: {
        error: {
          message: 'Unexpected error',
          instance: TypeError: Cannot read properties of undefined (reading 'filter')
              at file:///metrics/source/plugins/activity/index.mjs:140:33
              at Array.map (<anonymous>)
              at Object.default [as activity] (file:///metrics/source/plugins/activity/index.mjs:46:10)
              at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
              at async file:///metrics/source/plugins/core/index.mjs:67:30
              at async Promise.all (index 0)
              at async metrics (file:///metrics/source/app/metrics/index.mjs:81:22)
              at async retry.retries.retries (file:///metrics/source/app/action/index.mjs:407:40)
              at async retry (file:///metrics/source/app/action/index.mjs:57:22)
              at async file:///metrics/source/app/action/index.mjs:406:28
        }
      }
    }
  ]

It seems like the issue is in these lines:

metrics/source/plugins/activity/index.mjs

Lines 138 to 146 in 366f8b9

	case "PushEvent": {
	let {size, commits, ref} = payload
	commits = commits.filter(({author: {email}}) => imports.filters.text(email, ignored))
	if (!commits.length)
	return null
	if (commits.slice(-1).pop()?.message.startsWith("Merge branch "))
	commits = commits.slice(-1)
	return {type: "push", actor, timestamp, repo, size, branch: ref.match(/refs.heads.(?<branch>.*)/)?.groups?.branch ?? null, commits: commits.reverse().map(({sha, message}) => ({sha: sha.substring(0, 7), message}))}
	}

It seems like the way this was written doesn't match the PushEvent payload, as there is no commits property mentioned in the docs: https://docs.github.com/en/rest/using-the-rest-api/github-event-types?apiVersion=2022-11-28#event-payload-object-for-pushevent

I don't even use that event, but since the filtering happens afterwards, I still get the error.
It would be nice to have this fixed AND to have the filters happen before so that users can exclude an event type if they have errors, as a temporary measure.

[oddstr13]

See #1754
TL;DR commits was recently removed from the API, but several places in this project depend on the data from it.
I've fixed the issue in one location (which was causing my particular config to hard-crash), but there are several places yet to fix.