[support-infra] Show closing message on all repositories

[oliviertassinari]

Summary

MUI X has a workflow that allows to leave closing issue comments like: https://github.com/mui/mui-x/issues/12944#issuecomment-2084662738.

It would make sense to me to do the same to all MUI's repositories.

Examples

No response

Motivation

No response

Search keywords: -

[michelengelen]

Done for ...

• [x] mui-x (https://github.com/mui/mui-x/pull/14499)
• [x] material-ui (https://github.com/mui/material-ui/pull/43450)
• [x] base-ui (https://github.com/mui/base-ui/pull/598)
• [x] pigment-css (https://github.com/mui/pigment-css/pull/231)
• [x] mui-toolpad (https://github.com/mui/mui-toolpad/pull/4076)