Add cache context for OG permission
>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3560308. --> Reported by: [amitaibu](https://www.drupal.org/user/57511) Related to !57 >>> <p>- Core has <code>user.permissions</code> for per-permission caching; OG currently only varies by group context, membership state, and roles, so permission-<br> sensitive OG UI can be cached incorrectly.<br> - Add an OG permissions cache context to mirror core</p>
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