Exclude blocked and deleted users from participants stats

[alecslupu]

🎩 What? Why?

On the currents state of the application all the users are being added to the participant count, regardless the user is banned or deleted. This PR aims to fix the issue.

📋 Checklist

🚨 Please review the guidelines for contributing to this repository.

• ❓ CONSIDER adding a unit test if your PR resolves an issue.
• ✔️ DO check open PR's to avoid duplicates.
• ✔️ DO keep pull requests small so they can be easily reviewed.
• ✔️ DO build locally before pushing.
• ✔️ DO make sure tests pass.
• ✔️ DO make sure any new changes are documented in docs/.
• ✔️ DO add and modify seeds if necessary.
• ✔️ DO add CHANGELOG upgrade notes if required.
• ✔️ DO add to GraphQL API if there are new public fields.
• ✔️ DO add link to MetaDecidim if it's a new feature.
• ❌AVOID breaking the continuous integration build.
• ❌AVOID making significant changes to the overall architecture.

♥️ Thank you!

[andreslucena]

Hi @alecslupu
I think this is a much-needed fix 🙌🏽
Is this still a draft? Can you provide some descriptions 🙏🏽?

[alecslupu]

@andreslucena The description has been updated.

@leio10 this PR is ready to be reviewed.

[alecslupu]

@carolromero , @andreslucena This can be tested on http://alecslupu.go.ro:3309/ (default decidim admin credentials)

[carolromero]

checked ✔️, ready for technical review

[leio10]

Nice job, @alecslupu!! 👏👏

Just one request before merging it: Can you add a warning to the CHANGELOG about this change on the stats calculations? Those numbers are going to change after the update and it could alarm organizations, so we should let them know about it.

[alecslupu]

@leio10 the following line has been added to the change log:

As per [\#8147](https://github.com/decidim/decidim/pull/8147), the participants stats will not take into account deleted and blocked users.