fix(sync): let a linked desktop enable mirrored plugins it does not trust on its own (#1632)

* fix(sync): let a linked desktop enable mirrored plugins it does not trust on its own

* fix(sync): switch off an untrusted mirrored plugin when the server updates it

* fix: require local consent for mirrored plugin activation

* docs: describe consent fields on the plugin state endpoint

src/ui/locales/en.json

@@ -1967,6 +1967,7 @@
         "syncEntities_other": "Desktop sync"
       },
       "consent": {
+        "enableTitle": "Enable {{name}}?",
         "installTitle": "Install {{name}}",
         "updateTitle": "Update {{name}}",
         "agreeUpdate": "Agree and update",